Micah Anderson uploaded new packages for strongswan which fixed the
following security problems:
CVE-2012-2388
An authentication bypass issue was discovered by the Codenomicon
CROSS project in strongSwan, an IPsec-based VPN solution. When using
RSA-based setups, a missing check in the gmp plugin could allow an
attacker presenting a forged signature to successfully authenticate
against a strongSwan responder.
For the squeeze-backports distribution the problems have been fixed in
version 4.5.2-1.4~bpo60+1