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==========================================================================
Ubuntu Security Notice USN-1991-1
October 21, 2013

eglibc vulnerabilities
==========================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the GNU C Library.

Software Description:
- eglibc: GNU C Library

Details:

It was discovered that the GNU C Library incorrectly handled the strcoll()
function. An attacker could use this issue to cause a denial of service, or
possibly execute arbitrary code. (CVE-2012-4412, CVE-2012-4424)

It was discovered that the GNU C Library incorrectly handled multibyte
characters in the regular expression matcher. An attacker could use this
issue to cause a denial of service. (CVE-2013-0242)

It was discovered that the GNU C Library incorrectly handled large numbers
of domain conversion results in the getaddrinfo() function. An attacker
could use this issue to cause a denial of service. (CVE-2013-1914)

It was discovered that the GNU C Library readdir_r() function incorrectly
handled crafted NTFS or CIFS images. An attacker could use this issue to
cause a denial of service, or possibly execute arbitrary code.
(CVE-2013-4237)

It was discovered that the GNU C Library incorrectly handled memory
allocation. An attacker could use this issue to cause a denial of service.
(CVE-2013-4332)

Update instructions:

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

Ubuntu 13.04:
  libc6                           2.17-0ubuntu5.1

Ubuntu 12.10:
  libc6                           2.15-0ubuntu20.2

Ubuntu 12.04 LTS:
  libc6                           2.15-0ubuntu10.5

Ubuntu 10.04 LTS:
  libc6                           2.11.1-0ubuntu7.13

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

References:
  http://www.ubuntu.com/usn/usn-1991-1
  CVE-2012-4412, CVE-2012-4424, CVE-2013-0242, CVE-2013-1914,
  CVE-2013-4237, CVE-2013-4332

Package Information:
  https://launchpad.net/ubuntu/+source/eglibc/2.17-0ubuntu5.1
  https://launchpad.net/ubuntu/+source/eglibc/2.15-0ubuntu20.2
  https://launchpad.net/ubuntu/+source/eglibc/2.15-0ubuntu10.5
  https://launchpad.net/ubuntu/+source/eglibc/2.11.1-0ubuntu7.13



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