Security Errata

This section will be dedicated to security errata.  Users will be able to find out information regarding security issues and when a fix or work around is available. We will also provide severity levels so that users have an idea on severity.  Best practices are to update when your upgrade notifier tells you.

 The comments are open for people to offer input as well as post any Security errata and issues they feel need to be addressed.

15 comments:

  1. ==========================================================================
    Ubuntu Security Notice USN-2907-2
    February 22, 2016

    linux-lts-trusty vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 12.04 LTS

    Summary:

    Several security issues were fixed in the kernel.

    Software Description:
    - linux-lts-trusty: Linux hardware enablement kernel from Trusty

    Details:

    halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
    incorrectly propagated file attributes, including setuid. A local
    unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

    halfdog discovered that OverlayFS in the Linux kernel incorrectly
    propagated security sensitive extended attributes, such as
    POSIX ACLs. A local unprivileged attacker could use this to gain
    privileges. (CVE-2016-1575)

    It was discovered that the Linux kernel keyring subsystem contained a race
    between read and revoke operations. A local attacker could use this to
    cause a denial of service (system crash). (CVE-2015-7550)

    郭永刚 discovered that the Linux kernel networking implementation did
    not validate protocol identifiers for certain protocol families, A local
    attacker could use this to cause a denial of service (system crash) or
    possibly gain administrative privileges. (CVE-2015-8543)

    Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
    did not verify an address length when setting up a socket. A local attacker
    could use this to craft an application that exposed sensitive information
    from kernel memory. (CVE-2015-8569)

    David Miller discovered that the Bluetooth implementation in the Linux
    kernel did not properly validate the socket address length for Synchronous
    Connection-Oriented (SCO) sockets. A local attacker could use this to
    expose sensitive information. (CVE-2015-8575)

    It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
    implementation did not handle initial zero length segments properly. A
    local attacker could use this to cause a denial of service (unkillable
    task). (CVE-2015-8785)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 12.04 LTS:
    linux-image-3.13.0-79-generic 3.13.0-79.123~precise1
    linux-image-3.13.0-79-generic-lpae 3.13.0-79.123~precise1

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.

    References:
    http://www.ubuntu.com/usn/usn-2907-2
    http://www.ubuntu.com/usn/usn-2907-1
    CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575,
    CVE-2015-8785, CVE-2016-1575, CVE-2016-1576

    ReplyDelete
  2. ==========================================================================
    Ubuntu Security Notice USN-2908-1
    February 22, 2016

    linux vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 15.10

    Summary:

    Several security issues were fixed in the kernel.

    Software Description:
    - linux: Linux kernel

    Details:

    halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
    incorrectly propagated file attributes, including setuid. A local
    unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

    halfdog discovered that OverlayFS in the Linux kernel incorrectly
    propagated security sensitive extended attributes, such as POSIX ACLs. A
    local unprivileged attacker could use this to gain privileges.
    (CVE-2016-1575)

    It was discovered that the Linux kernel did not properly enforce rlimits
    for file descriptors sent over UNIX domain sockets. A local attacker could
    use this to cause a denial of service. (CVE-2013-4312)

    It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
    implementation did not handle initial zero length segments properly. A
    local attacker could use this to cause a denial of service (unkillable
    task). (CVE-2015-8785)

    Andy Lutomirski discovered a race condition in the Linux kernel's
    translation lookaside buffer (TLB) handling of flush events. A local
    attacker could use this to cause a denial of service or possibly leak
    sensitive information. (CVE-2016-2069)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 15.10:
    linux-image-4.2.0-30-generic 4.2.0-30.35
    linux-image-4.2.0-30-generic-lpae 4.2.0-30.35
    linux-image-4.2.0-30-lowlatency 4.2.0-30.35
    linux-image-4.2.0-30-powerpc-e500mc 4.2.0-30.35
    linux-image-4.2.0-30-powerpc-smp 4.2.0-30.35
    linux-image-4.2.0-30-powerpc64-emb 4.2.0-30.35
    linux-image-4.2.0-30-powerpc64-smp 4.2.0-30.35

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.

    References:
    http://www.ubuntu.com/usn/usn-2908-1
    CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576,
    CVE-2016-2069

    ReplyDelete
  3. ==========================================================================
    Ubuntu Security Notice USN-2908-2
    February 22, 2016

    linux-lts-wily vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 14.04 LTS

    Summary:

    Several security issues were fixed in the kernel.

    Software Description:
    - linux-lts-wily: Linux hardware enablement kernel from Wily

    Details:

    halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
    incorrectly propagated file attributes, including setuid. A local
    unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

    halfdog discovered that OverlayFS in the Linux kernel incorrectly
    propagated security sensitive extended attributes, such as POSIX ACLs. A
    local unprivileged attacker could use this to gain privileges.
    (CVE-2016-1575)

    It was discovered that the Linux kernel did not properly enforce rlimits
    for file descriptors sent over UNIX domain sockets. A local attacker could
    use this to cause a denial of service. (CVE-2013-4312)

    It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
    implementation did not handle initial zero length segments properly. A
    local attacker could use this to cause a denial of service (unkillable
    task). (CVE-2015-8785)

    Andy Lutomirski discovered a race condition in the Linux kernel's
    translation lookaside buffer (TLB) handling of flush events. A local
    attacker could use this to cause a denial of service or possibly leak
    sensitive information. (CVE-2016-2069)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 14.04 LTS:
    linux-image-4.2.0-30-generic 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-generic-lpae 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-lowlatency 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-powerpc-e500mc 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-powerpc-smp 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-powerpc64-emb 4.2.0-30.35~14.04.1
    linux-image-4.2.0-30-powerpc64-smp 4.2.0-30.35~14.04.1

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.

    References:
    http://www.ubuntu.com/usn/usn-2908-2
    http://www.ubuntu.com/usn/usn-2908-1
    CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576,
    CVE-2016-2069

    ReplyDelete
  4. ==========================================================================
    Ubuntu Security Notice USN-2910-1
    February 22, 2016

    linux-lts-vivid vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 14.04 LTS

    Summary:

    Several security issues were fixed in the kernel.

    Software Description:
    - linux-lts-vivid: Linux hardware enablement kernel from Vivid

    Details:

    halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
    incorrectly propagated file attributes, including setuid. A local
    unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

    halfdog discovered that OverlayFS in the Linux kernel incorrectly
    propagated security sensitive extended attributes, such as POSIX ACLs. A
    local unprivileged attacker could use this to gain privileges.
    (CVE-2016-1575)

    It was discovered that the Linux kernel keyring subsystem contained a race
    between read and revoke operations. A local attacker could use this to
    cause a denial of service (system crash). (CVE-2015-7550)

    郭永刚 discovered that the Linux kernel networking implementation did
    not validate protocol identifiers for certain protocol families, A local
    attacker could use this to cause a denial of service (system crash) or
    possibly gain administrative privileges. (CVE-2015-8543)

    Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
    did not verify an address length when setting up a socket. A local attacker
    could use this to craft an application that exposed sensitive information
    from kernel memory. (CVE-2015-8569)

    David Miller discovered that the Bluetooth implementation in the Linux
    kernel did not properly validate the socket address length for Synchronous
    Connection-Oriented (SCO) sockets. A local attacker could use this to
    expose sensitive information. (CVE-2015-8575)

    It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
    implementation did not handle initial zero length segments properly. A
    local attacker could use this to cause a denial of service (unkillable
    task). (CVE-2015-8785)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 14.04 LTS:
    linux-image-3.19.0-51-generic 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-generic-lpae 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-lowlatency 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-powerpc-e500mc 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-powerpc-smp 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-powerpc64-emb 3.19.0-51.57~14.04.1
    linux-image-3.19.0-51-powerpc64-smp 3.19.0-51.57~14.04.1

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.

    References:
    http://www.ubuntu.com/usn/usn-2910-1
    CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575,
    CVE-2015-8785, CVE-2016-1575, CVE-2016-1576

    ReplyDelete
  5. ==========================================================================
    Ubuntu Security Notice USN-2911-1
    February 22, 2016

    linux vulnerability
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 12.04 LTS

    Summary:

    The system could be made to crash under certain conditions.

    Software Description:
    - linux: Linux kernel

    Details:

    It was discovered that the Linux kernel keyring subsystem contained a race
    between read and revoke operations. A local attacker could use this to
    cause a denial of service (system crash).

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 12.04 LTS:
    linux-image-3.2.0-99-generic 3.2.0-99.139
    linux-image-3.2.0-99-generic-pae 3.2.0-99.139
    linux-image-3.2.0-99-highbank 3.2.0-99.139
    linux-image-3.2.0-99-omap 3.2.0-99.139
    linux-image-3.2.0-99-powerpc-smp 3.2.0-99.139
    linux-image-3.2.0-99-powerpc64-smp 3.2.0-99.139
    linux-image-3.2.0-99-virtual 3.2.0-99.139

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.

    References:
    http://www.ubuntu.com/usn/usn-2911-1
    CVE-2015-7550

    ReplyDelete
  6. ==========================================================================
    Ubuntu Security Notice USN-2913-1
    February 24, 2016

    ca-certificates update
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Black Lab Linux 5.x/6.x/7.x

    Summary:

    ca-certificates was updated to the 20160104 package.

    Software Description:
    - ca-certificates: Common CA certificates

    Details:

    The ca-certificates package contained outdated CA certificates. This update
    refreshes the included certificates to those contained in the 20160104
    package, including the removal of the SPI CA and CA certificates with
    1024-bit RSA keys.

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 15.10:
    ca-certificates 20160104ubuntu0.15.10.1

    Ubuntu 14.04 LTS:
    ca-certificates 20160104ubuntu0.14.04.1

    Ubuntu 12.04 LTS:
    ca-certificates 20160104ubuntu0.12.04.1

    In general, a standard system update will make all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2913-1
    https://launchpad.net/bugs/1528645

    Package Information:
    https://launchpad.net/ubuntu/+source/ca-certificates/20160104ubuntu0.15.10.1
    https://launchpad.net/ubuntu/+source/ca-certificates/20160104ubuntu0.14.04.1
    https://launchpad.net/ubuntu/+source/ca-certificates/20160104ubuntu0.12.04.1

    ReplyDelete
  7. ==========================================================================
    Ubuntu Security Notice USN-2913-2
    February 24, 2016

    glib-networking update
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Black Lab Linux 4.x/5.x/6.x/7.x

    Summary:

    Updated glib-networking packages are required for the USN-2913-1 update.

    Software Description:
    - glib-networking: network-related giomodules for GLib

    Details:

    USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates
    package. This update adds support for alternate certificate chains to the
    glib-networking package to properly handle the removal.

    Original advisory details:

    The ca-certificates package contained outdated CA certificates. This update
    refreshes the included certificates to those contained in the 20160104
    package, including the removal of the SPI CA and CA certificates with
    1024-bit RSA keys.

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 15.10:
    glib-networking 2.46.0-1ubuntu0.1

    Ubuntu 14.04 LTS:
    glib-networking 2.40.0-1ubuntu0.1

    Ubuntu 12.04 LTS:
    glib-networking 2.32.1-1ubuntu2.1

    In general, a standard system update will make all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2913-2
    http://www.ubuntu.com/usn/usn-2913-1
    https://launchpad.net/bugs/1528645

    Package Information:
    https://launchpad.net/ubuntu/+source/glib-networking/2.46.0-1ubuntu0.1
    https://launchpad.net/ubuntu/+source/glib-networking/2.40.0-1ubuntu0.1
    https://launchpad.net/ubuntu/+source/glib-networking/2.32.1-1ubuntu2.1

    ReplyDelete
  8. ==========================================================================
    Ubuntu Security Notice USN-2913-3
    February 24, 2016

    openssl update
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Black Lab Linux 6.x/7.x

    Summary:

    Updated OpenSSL packages are required for the USN-2913-1 update.

    Software Description:
    - openssl: Secure Socket Layer (SSL) cryptographic library and tools

    Details:

    USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates
    package. This update adds support for alternate certificate chains to the
    OpenSSL package to properly handle the removal.

    Original advisory details:

    The ca-certificates package contained outdated CA certificates. This update
    refreshes the included certificates to those contained in the 20160104
    package, including the removal of the SPI CA and CA certificates with
    1024-bit RSA keys.

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 14.04 LTS:
    libssl1.0.0 1.0.1f-1ubuntu2.17

    Ubuntu 12.04 LTS:
    libssl1.0.0 1.0.1-4ubuntu5.34

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2913-3
    http://www.ubuntu.com/usn/usn-2913-1
    https://launchpad.net/bugs/1528645

    Package Information:
    https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.17
    https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.34

    ReplyDelete
  9. ==========================================================================
    Ubuntu Security Notice USN-2913-4
    February 24, 2016

    gnutls26 update
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Black Lab Linux 5.x/6.x/7.x

    Summary:

    Updated GnuTLS packages are required for the USN-2913-1 update.

    Software Description:
    - gnutls26: GNU TLS library

    Details:

    USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates
    package. This update adds support for alternate certificate chains to the
    GnuTLS package to properly handle the removal.

    Original advisory details:

    The ca-certificates package contained outdated CA certificates. This update
    refreshes the included certificates to those contained in the 20160104
    package, including the removal of the SPI CA and CA certificates with
    1024-bit RSA keys.

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 14.04 LTS:
    libgnutls26 2.12.23-12ubuntu2.5

    Ubuntu 12.04 LTS:
    libgnutls26 2.12.14-5ubuntu3.12

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2913-4
    http://www.ubuntu.com/usn/usn-2913-1
    https://launchpad.net/bugs/1528645

    Package Information:
    https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.5
    https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.12

    ReplyDelete
  10. ==========================================================================
    Ubuntu Security Notice USN-2903-2
    February 23, 2016

    nss regression
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Ubuntu 12.04 LTS
    - Black Lab Linux 4.x

    Summary:

    USN-2903-1 introduced a regression in NSS.

    Software Description:
    - nss: Network Security Service library

    Details:

    USN-2903-1 fixed a vulnerability in NSS. An incorrect package versioning
    change in Ubuntu 12.04 LTS caused a regression when building software
    against NSS. This update fixes the problem.

    We apologize for the inconvenience.

    Original advisory details:

    Hanno Böck discovered that NSS incorrectly handled certain division
    functions, possibly leading to cryptographic weaknesses. (CVE-2016-1938)
    This update also refreshes the NSS package to version 3.21 which includes
    the latest CA certificate bundle, and removes the SPI CA.

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 12.04 LTS:
    libnss3-dev 2:3.21-0ubuntu0.12.04.2

    In general, a standard system update will make all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2903-2
    http://www.ubuntu.com/usn/usn-2903-1
    https://launchpad.net/bugs/1547147

    Package Information:
    https://launchpad.net/ubuntu/+source/nss/2:3.21-0ubuntu0.12.04.2

    ReplyDelete
  11. ==========================================================================
    Ubuntu Security Notice USN-2908-4
    February 26, 2016

    linux regression
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Black Lab Linux 7.0.3
    - Ubuntu 15.10

    Summary:

    USN-2908-1 introduced a regression in the Linux kernel.

    Software Description:
    - linux: Linux kernel

    Details:

    USN-2908-1 fixed vulnerabilities in the Linux kernel for Ubuntu
    15.10. An incorrect locking fix caused a regression that broke
    graphics displays for Ubuntu 15.10 guests running within VMWare
    virtual machines. This update fixes the problem.

    We apologize for the inconvenience.

    Original advisory details:

    halfdog discovered that OverlayFS, when mounting on top of a FUSE mount,
    incorrectly propagated file attributes, including setuid. A local
    unprivileged attacker could use this to gain privileges. (CVE-2016-1576)

    halfdog discovered that OverlayFS in the Linux kernel incorrectly
    propagated security sensitive extended attributes, such as POSIX ACLs. A
    local unprivileged attacker could use this to gain privileges.
    (CVE-2016-1575)

    It was discovered that the Linux kernel did not properly enforce rlimits
    for file descriptors sent over UNIX domain sockets. A local attacker could
    use this to cause a denial of service. (CVE-2013-4312)

    It was discovered that the Linux kernel's Filesystem in Userspace (FUSE)
    implementation did not handle initial zero length segments properly. A
    local attacker could use this to cause a denial of service (unkillable
    task). (CVE-2015-8785)

    Andy Lutomirski discovered a race condition in the Linux kernel's
    translation lookaside buffer (TLB) handling of flush events. A local
    attacker could use this to cause a denial of service or possibly leak
    sensitive information. (CVE-2016-2069)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 15.10:
    linux-image-4.2.0-30-generic 4.2.0-30.36
    linux-image-4.2.0-30-generic-lpae 4.2.0-30.36
    linux-image-4.2.0-30-lowlatency 4.2.0-30.36
    linux-image-4.2.0-30-powerpc-e500mc 4.2.0-30.36
    linux-image-4.2.0-30-powerpc-smp 4.2.0-30.36
    linux-image-4.2.0-30-powerpc64-emb 4.2.0-30.36
    linux-image-4.2.0-30-powerpc64-smp 4.2.0-30.36

    After a standard system update you need to reboot your computer to make
    all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2908-4
    http://www.ubuntu.com/usn/usn-2908-1
    https://launchpad.net/bugs/1548587

    Package Information:
    https://launchpad.net/ubuntu/+source/linux/4.2.0-30.36

    ReplyDelete
  12. ==========================================================================
    Ubuntu Security Notice USN-2904-1
    March 08, 2016

    thunderbird vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Black Lab Linux 5.x/6.x/7.x
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS

    Summary:

    Several security issues were fixed in Thunderbird.

    Software Description:
    - thunderbird: Mozilla Open Source mail and newsgroup client

    Details:

    Karthikeyan Bhargavan and Gaetan Leurent discovered that NSS incorrectly
    allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were
    able to perform a man-in-the-middle attack, this flaw could be exploited to
    view sensitive information. (CVE-2015-7575)

    Yves Younan discovered that graphite2 incorrectly handled certain malformed
    fonts. If a user were tricked into opening a specially crafted website in a
    browsing context, an attacker could potentially exploit this to cause a
    denial of service via application crash, or execute arbitary code with the
    privileges of the user invoking Thunderbird. (CVE-2016-1523)

    Bob Clary, Christian Holler, Nils Ohlmeier, Gary Kwong, Jesse Ruderman,
    Carsten Book, and Randell Jesup discovered multiple memory safety issues
    in Thunderbird. If a user were tricked in to opening a specially crafted
    website in a browsing context, an attacker could potentially exploit these
    to cause a denial of service via application crash, or execute arbitrary
    code with the privileges of the user invoking Thunderbird. (CVE-2016-1930)

    Aki Helin discovered a buffer overflow when rendering WebGL content in
    some circumstances. If a user were tricked in to opening a specially
    crafted website in a browsing context, an attacker could potentially
    exploit this to cause a denial of service via application crash, or
    execute arbitrary code with the privileges of the user invoking
    Thunderbird. (CVE-2016-1935)

    Update instructions:

    The problem can be corrected by updating your system to the following
    package versions:

    Ubuntu 15.10:
    thunderbird 1:38.6.0+build1-0ubuntu0.15.10.1

    Ubuntu 14.04 LTS:
    thunderbird 1:38.6.0+build1-0ubuntu0.14.04.1

    Ubuntu 12.04 LTS:
    thunderbird 1:38.6.0+build1-0ubuntu0.12.04.1

    After a standard system update you need to restart Thunderbird to make
    all the necessary changes.

    References:
    http://www.ubuntu.com/usn/usn-2904-1
    CVE-2015-7575, CVE-2016-1523, CVE-2016-1930, CVE-2016-1935

    Package Information:
    https://launchpad.net/ubuntu/+source/thunderbird/1:38.6.0+build1-0ubuntu0.15.10.1
    https://launchpad.net/ubuntu/+source/thunderbird/1:38.6.0+build1-0ubuntu0.14.04.1
    https://launchpad.net/ubuntu/+source/thunderbird/1:38.6.0+build1-0ubuntu0.12.04.1

    ReplyDelete
  13. Security Notice USN-2959-1
    May 03, 2016

    openssl vulnerabilities
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Black Lab Linux 4.x/5.x
    - Black Lab Linux 6.x/7.x
    - Ubuntu 16.04 LTS
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS

    Summary:

    Several security issues were fixed in OpenSSL.

    Software Description:
    - openssl: Secure Socket Layer (SSL) cryptographic library and tools

    Details:

    Huzaifa Sidhpurwala, Hanno Böck, and David Benjamin discovered that OpenSSL
    incorrectly handled memory when decoding ASN.1 structures. A remote
    attacker could use this issue to cause OpenSSL to crash, resulting in a
    denial of service, or possibly execute arbitrary code. (CVE-2016-2108)

    Juraj Somorovsky discovered that OpenSSL incorrectly performed padding when
    the connection uses the AES CBC cipher and the server supports AES-NI. A
    remote attacker could possibly use this issue to perform a padding oracle
    attack and decrypt traffic. (CVE-2016-2107)

    Guido Vranken discovered that OpenSSL incorrectly handled large amounts of
    input data to the EVP_EncodeUpdate() function. A remote attacker could use
    this issue to cause OpenSSL to crash, resulting in a denial of service, or
    possibly execute arbitrary code. (CVE-2016-2105)

    Guido Vranken discovered that OpenSSL incorrectly handled large amounts of
    input data to the EVP_EncryptUpdate() function. A remote attacker could use
    this issue to cause OpenSSL to crash, resulting in a denial of service, or
    possibly execute arbitrary code. (CVE-2016-2106)

    Brian Carpenter discovered that OpenSSL incorrectly handled memory when
    ASN.1 data is read from a BIO. A remote attacker could possibly use this
    issue to cause memory consumption, resulting in a denial of service.
    (CVE-2016-2109)

    As a security improvement, this update also modifies OpenSSL behaviour to
    reject DH key sizes below 1024 bits, preventing a possible downgrade
    attack.

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  14. Ubuntu Security Notice USN-2950-2
    May 04, 2016

    samba regressions
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Black Lab Linux 4.x/5.x
    - Black Lab Linux 6.x/7.x
    - Ubuntu 16.04 LTS
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS

    Summary:

    USN-2950-1 introduced regressions in Samba.

    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix

    Details:

    USN-2950-1 fixed vulnerabilities in Samba. The fixes introduced in Samba
    4.3.8 caused certain regressions and interoperability issues.

    This update resolves some of these issues by updating to Samba 4.3.9 in
    Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. Backported regression
    fixes were added to Samba 3.6.25 in Ubuntu 12.04 LTS.

    Original advisory details:

    Jouni Knuutinen discovered that Samba contained multiple flaws in the
    DCE/RPC implementation. A remote attacker could use this issue to perform
    a denial of service, downgrade secure connections by performing a man in
    the middle attack, or possibly execute arbitrary code. (CVE-2015-5370)
    Stefan Metzmacher discovered that Samba contained multiple flaws in the
    NTLMSSP authentication implementation. A remote attacker could use this
    issue to downgrade connections to plain text by performing a man in the
    middle attack. (CVE-2016-2110)
    Alberto Solino discovered that a Samba domain controller would establish a
    secure connection to a server with a spoofed computer name. A remote
    attacker could use this issue to obtain sensitive information.
    (CVE-2016-2111)
    Stefan Metzmacher discovered that the Samba LDAP implementation did not
    enforce integrity protection. A remote attacker could use this issue to
    hijack LDAP connections by performing a man in the middle attack.
    (CVE-2016-2112)
    Stefan Metzmacher discovered that Samba did not validate TLS certificates.
    A remote attacker could use this issue to spoof a Samba server.
    (CVE-2016-2113)
    Stefan Metzmacher discovered that Samba did not enforce SMB signing even if
    configured to. A remote attacker could use this issue to perform a man in
    the middle attack. (CVE-2016-2114)
    Stefan Metzmacher discovered that Samba did not enable integrity protection
    for IPC traffic. A remote attacker could use this issue to perform a man in
    the middle attack. (CVE-2016-2115)
    Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and
    MS-LSAD protocols. A remote attacker could use this flaw with a man in the
    middle attack to impersonate users and obtain sensitive information from
    the Security Account Manager database. This flaw is known as Badlock.
    (CVE-2016-2118)
    Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10.
    Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes.
    In addition to security fixes, the updated packages contain bug fixes,
    new features, and possibly incompatible changes. Configuration changes may
    be required in certain environments.

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  15. Ubuntu Security Notice USN-2965-2
    May 06, 2016
    ==========================================================================

    A security issue affects these releases of Ubuntu and its derivatives:

    - Black Lab Linux 7.x

    Summary:

    Several security issues were fixed in the kernel.

    Software Description:
    - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

    Details:

    Jann Horn discovered that the extended Berkeley Packet Filter (eBPF)
    implementation in the Linux kernel did not properly reference count file
    descriptors, leading to a use-after-free. A local unprivileged attacker
    could use this to gain administrative privileges. (CVE-2016-4557)

    Ralf Spenneberg discovered that the USB sound subsystem in the Linux kernel
    did not properly validate USB device descriptors. An attacker with physical
    access could use this to cause a denial of service (system crash).
    (CVE-2016-2184)

    Ralf Spenneberg discovered that the PowerMate USB driver in the Linux
    kernel did not properly validate USB device descriptors. An attacker with
    physical access could use this to cause a denial of service (system crash).
    (CVE-2016-2186)

    Ralf Spenneberg discovered that the I/O-Warrior USB device driver in the
    Linux kernel did not properly validate USB device descriptors. An attacker
    with physical access could use this to cause a denial of service (system
    crash). (CVE-2016-2188)

    Sergej Schumilo, Hendrik Schwartke, and Ralf Spenneberg discovered that the
    MCT USB RS232 Converter device driver in the Linux kernel did not properly
    validate USB device descriptors. An attacker with physical access could use
    this to cause a denial of service (system crash). (CVE-2016-3136)

    Sergej Schumilo, Hendrik Schwartke, and Ralf Spenneberg discovered that the
    USB abstract device control driver for modems and ISDN adapters did not
    validate endpoint descriptors. An attacker with physical access could use
    this to cause a denial of service (system crash). (CVE-2016-3138)

    Sergej Schumilo, Hendrik Schwartke, and Ralf Spenneberg discovered that the
    Linux kernel's USB driver for Digi AccelePort serial converters did not
    properly validate USB device descriptors. An attacker with physical access
    could use this to cause a denial of service (system crash). (CVE-2016-3140)

    It was discovered that the IPv4 implementation in the Linux kernel did not
    perform the destruction of inet device objects properly. An attacker in a
    guest OS could use this to cause a denial of service (networking outage) in
    the host OS. (CVE-2016-3156)

    Andy Lutomirski discovered that the Linux kernel did not properly context-
    switch IOPL on 64-bit PV Xen guests. An attacker in a guest OS could use
    this to cause a denial of service (guest OS crash), gain privileges, or
    obtain sensitive information. (CVE-2016-3157)

    Hector Marco and Ismael Ripoll discovered that the Linux kernel would
    improperly disable Address Space Layout Randomization (ASLR) for x86
    processes running in 32 bit mode if stack-consumption resource limits were
    disabled. A local attacker could use this to make it easier to exploit an
    existing vulnerability in a setuid/setgid program. (CVE-2016-3672)

    It was discovered that the Linux kernel's USB driver for IMS Passenger
    Control Unit devices did not properly validate the device's interfaces. An
    attacker with physical access could use this to cause a denial of service
    (system crash). (CVE-2016-3689)

    Andrey Konovalov discovered that the CDC Network Control Model USB driver
    in the Linux kernel did not cancel work events queued if a later error
    occurred, resulting in a use-after-free. An attacker with physical access
    could use this to cause a denial of service (system crash). (CVE-2016-3951)

    It was discovered that an out-of-bounds write could occur when handling
    incoming packets in the USB/IP implementation in the Linux kernel. A remote
    attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2016-3955)

    ReplyDelete