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
Summary
GNU C Library could be made to crash or run programs if it received
specially crafted network traffic.
Software description
- eglibc
– GNU C Library - glibc
– GNU C Library
Details
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.
Update instructions
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.
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