Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 might allow remote authenticated gateways to execute arbitrary code or cause a denial of service via a long cisco_banner (aka server_banner) field.
secunia.com/advisories/41769
www.openswan.org/download/CVE-2010-3308/CVE-2010-3308.txt
www.openswan.org/download/CVE-2010-3308/openswan-2.6.26-2.6.28-CVE-2010-330x.patch
www.redhat.com/support/errata/RHSA-2010-0892.html
www.securityfocus.com/bid/43588
www.securitytracker.com/id?1024749
www.vupen.com/english/advisories/2010/2526
lists.fedoraproject.org/pipermail/package-announce/2010-October/048999.html
lists.fedoraproject.org/pipermail/package-announce/2010-October/049053.html
lists.fedoraproject.org/pipermail/package-announce/2010-October/049073.html