libssh: Arbitrary code execution

Background

libssh is a C library providing SSHv2 and SSHv1.

Description

Multiple buffer overflow, double free, and integer overflow vulnerabilities have been discovered in libssh.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All libssh users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-libs/libssh-0.5.3"