Ubuntu 14.04 LTS: USN-2307-1 Moderate: libc6 Security Flaw

ubuntu

August 4, 2014

Several security issues were fixed in the GNU C Library.

Summary

Several security issues were fixed in the GNU C Library.

Software Description:

- eglibc: GNU C Library

Details:

Maksymilian Arciemowicz discovered that the GNU C Library incorrectly

handled the getaddrinfo() function. An attacker could use this issue to

cause a denial of service. This issue only affected Ubuntu 10.04 LTS.

(CVE-2013-4357)

It was discovered that the GNU C Library incorrectly handled the

getaddrinfo() function. An attacker could use this issue to cause a denial

of service. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS.

(CVE-2013-4458)

Stephane Chazelas discovered that the GNU C Library incorrectly handled

locale environment variables. An attacker could use this issue to possibly

bypass certain restrictions such as the ForceCommand restrictions in

OpenSSH. (CVE-2014-0475)

David Reid, Glyph Lefkowitz, and Alex Gaynor discovered that the GNU C

Library incorrectly handled posix_spawn_file_actions_addopen() path

arguments. An...

Read the Full Advisory

Topics Covered

security advisory moderate denial of service ubuntu eglibc

Update Instructions

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

Ubuntu 14.04 LTS:
  libc6                           2.19-0ubuntu6.1

Ubuntu 12.04 LTS:
  libc6                           2.15-0ubuntu10.6

Ubuntu 10.04 LTS:
  libc6                           2.11.1-0ubuntu7.14

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