Ubuntu 2519-1: GNU C Library vulnerabilities

    Date26 Feb 2015
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the GNU C Library.
    Ubuntu Security Notice USN-2519-1
    February 26, 2015
    eglibc, glibc vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    Several security issues were fixed in the GNU C Library.
    Software Description:
    - glibc: GNU C Library
    - eglibc: GNU C Library
    Arnaud Le Blanc discovered that the GNU C Library incorrectly handled file
    descriptors when resolving DNS queries under high load. This may cause a
    denial of service in other applications, or an information leak. This issue
    only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
    It was discovered that the GNU C Library incorrectly handled receiving a
    positive answer while processing the network name when performing DNS
    resolution. A remote attacker could use this issue to cause the GNU C
    Library to hang, resulting in a denial of service. (CVE-2014-9402)
    Joseph Myers discovered that the GNU C Library wscanf function incorrectly
    handled memory. A remote attacker could possibly use this issue to cause
    the GNU C Library to crash, resulting in a denial of service, or possibly
    execute arbitrary code. This issue only affected Ubuntu 12.04 LTS, Ubuntu
    14.04 LTS and Ubuntu 14.10. (CVE-2015-1472, CVE-2015-1473)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 14.10:
      libc6                           2.19-10ubuntu2.3
    Ubuntu 14.04 LTS:
      libc6                           2.19-0ubuntu6.6
    Ubuntu 12.04 LTS:
      libc6                           2.15-0ubuntu10.11
    Ubuntu 10.04 LTS:
      libc6                           2.11.1-0ubuntu7.21
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
      CVE-2013-7423, CVE-2014-9402, CVE-2015-1472, CVE-2015-1473
    Package Information:

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