USN-2900-1: GNU C Library vulnerability
Ubuntu Security Notice USN-2900-1
16th February, 2016
eglibc, glibc vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
GNU C Library could be made to crash or run programs if it received specially crafted network traffic.
- eglibc - GNU C Library
- glibc - GNU C Library
It was discovered that the GNU C Library incorrectly handled receiving
responses while performing DNS resolution. A remote attacker could use this
issue to cause the GNU C Library to crash, resulting in a denial of
service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 15.10:
- libc6 2.21-0ubuntu4.1
- Ubuntu 14.04 LTS:
- libc6 2.19-0ubuntu6.7
- Ubuntu 12.04 LTS:
- libc6 2.15-0ubuntu10.13
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.