ipsec-tools - null dereference

The Internet Key Exchange version 1 (IKEv1) implementation in racoon
from ipsec-tools, IPsec tools for Linux, try to dereference a NULL
pointer under certain conditions which allows a remote attacker to
cause a denial of service.

The old stable distribution (woody) does not contain ipsec-tools.

For the stable distribution (sarge) this problem has been fixed in
version 0.5.2-1sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 0.6.3-1.

We recommend that you upgrade your racoon package.