linssh could be made to crash or run programs if it received specially crafted network traffic.
Xi Wang and Florian Weimer discovered that libssh incorrectly handled memory. A remote attacker could use this to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562)
26 November 2012
A security issue affects these releases of Ubuntu and its derivatives:
linssh could be made to crash or run programs if it received specially crafted network traffic.
Xi Wang and Florian Weimer discovered that libssh incorrectly handled memory. A remote attacker could use this to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562)
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon