Ubuntu 13.04: USN-1991-1 Moderate: eglibc Denial Of Service Vulnerability

ubuntu

October 21, 2013

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:

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)

I...

Read the Full Advisory

Topics Covered

security advisory security issue doS ubuntu egliedc

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.