Ubuntu Security Notice USN-2478-1
19th January, 2015
libssh vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
libssh could be made to crash if it received specially crafted network
traffic.
Software description
- libssh
– A tiny C SSH library
Details
It was discovered that libssh incorrectly handled certain kexinit packets.
A remote attacker could possibly use this issue to cause libssh to crash,
resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.10:
-
libssh-4
0.6.3-2ubuntu1.1
- Ubuntu 14.04 LTS:
-
libssh-4
0.6.1-0ubuntu3.1
- Ubuntu 12.04 LTS:
-
libssh-4
0.5.2-1ubuntu0.12.04.4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.