Debian: DSA-2893-1 Moderate: Openswan Remote Buffer Overflow

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
distri...