Debian: DSA-2893-1: openswan security update
Summary
Two vulnerabilities were fixed in Openswan, an IKE/IPsec implementation
for Linux.
CVE-2013-2053
During an audit of Libreswan (with which Openswan shares some code),
Florian Weimer found a remote buffer overflow in the atodn()
function. This vulnerability can be triggered when Opportunistic
Encryption (OE) is enabled and an attacker controls the PTR record
of a peer IP address.
Authentication is not needed to trigger the vulnerability.
CVE-2013-6466
Iustina Melinte found a vulnerability in Libreswan which also
applies to the Openswan code. By carefuly crafting IKEv2 packets, an
attacker can make the pluto daemon derefeences non-received IKEv2
payload, leading to the daemon crash.
Authentication is not needed to trigger the vulnerability.
Patches were originally written to fix the vulnerabilities in Libreswan,
and have been ported to Openswan by Paul Wouters from the Libreswan
Project.
Since the Openswan package is not maintained anymore in the Debian
distribution and is not available in testing and unstable suites, it is
recommended for IKE/IPsec users to switch to a supported implementation
like strongSwan.
For the oldstable distribution (squeeze), these problems have been fixed in
version 2.6.28+dfsg-5+squeeze2.
For the stable distribution (wheezy), these problems have been fixed in
version 2.6.37-3.1.
We recommend that you upgrade your openswan packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
