Security Information / 2013 / Security Information -- DSA-2663-1 tinc

Debian Security Advisory

DSA-2663-1 tinc -- stack based buffer overflow

Date Reported:

22 Apr 2013

Affected Packages:

tinc

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2013-1428.

More information:

Martin Schobert discovered a stack-based vulnerability in tinc, a Virtual Private Network (VPN) daemon.

When packets are forwarded via TCP, packet length is not checked against the stack buffer length. Authenticated peers could use this to crash the tinc daemon and maybe execute arbitrary code.

Note that on Wheezy and Sid, tinc is built using hardening flags and especially stack smashing protection, which should help protect against arbitrary code execution.

For the stable distribution (squeeze), this problem has been fixed in version 1.0.13-1+squeeze1.

For the testing distribution (wheezy), this problem has been fixed in version 1.0.19-3.

For the unstable distribution (sid), this problem has been fixed in version 1.0.19-3.

We recommend that you upgrade your tinc packages.