USN-1640-1: libssh vulnerabilities

Releases

• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 10.04

Packages

• libssh - A tiny C SSH library

Details

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)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.10

• libssh-4 - 0.5.2-1ubuntu0.12.10.1

Ubuntu 12.04

• libssh-4 - 0.5.2-1ubuntu0.12.04.1

Ubuntu 11.10

• libssh-4 - 0.5.2-1ubuntu0.11.10.1

Ubuntu 10.04

• libssh-4 - 0.4.2-1ubuntu1.1

In general, a standard system update will make all the necessary changes.

References

• CVE-2012-4559
• CVE-2012-4560
• CVE-2012-4561
• CVE-2012-4562