ipsec-tools contains a vulnerability that affects connections authenticated with X.509 certificates.
|Package||net-firewall/ipsec-tools on the amd64 architecture|
|Affected versions||<= 0.2.4|
|Unaffected versions||>= 0.2.5|
From http://ipsec-tools.sourceforge.net/ :
"IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec implementation."
racoon (a utility in the ipsec-tools package) does not verify digital signatures on Phase1 packets. This means that anybody holding the correct X.509 certificate would be able to establish a connection, even if they did not have the corresponding private key.
Since digital signatures are not verified by the racoon tool, an attacker may be able to connect to the VPN gateway and/or execute a man-in-the-middle attack.
A workaround is not currently known for this issue. All users are advised to upgrade to the latest version of the affected package.
ipsec-tools users should upgrade to version 0.2.5 or later:
# emerge sync # emerge -pv ">=net-firewall/ipsec-tools-0.2.5" # emerge ">=net-firewall/ipsec-tools-0.2.5"
April 07, 2004
April 07, 2004: 01