Debian Security Advisory DSA 2697-1 (gnutls26 - Out-of-bounds Array Read) Network Vulnerability

Summary

It was discovered that a malicious client could crash a GNUTLS server and vice versa, by sending TLS records encrypted with a block cipher which contain invalid padding. The oldstable distribution (squeeze) is not affected because the security fix that introduced this vulnerability was not applied to it.

Solution

For the stable distribution (wheezy), this problem has been fixed in version 2.12.20-7. For the unstable distribution (sid), this problem has been fixed in version 2.12.23-5. We recommend that you upgrade your gnutls26 packages.

Insight

gnutls is a portable library which implements the Transport Layer Security (TLS) 1.0 and Secure Sockets Layer (SSL) 3.0 protocols.

Affected

gnutls26 on Debian Linux

Detection

This check tests the installed software version using the apt package manager.

References