A vulnerability in Libreswan could lead to a Denial of Service condition.
|Package||net-vpn/libreswan on all architectures|
|Affected versions||< 3.32|
|Unaffected versions||>= 3.32|
Libreswan is a free software implementation of the most widely supported and standarized VPN protocol based on (“IPsec”) and the Internet Key Exchange (“IKE”).
As a result of a bug in handling certain bogus encrypted IKEv1, while building a log message that the packet has been dropped, a NULL pointer dereference causes Libreswan to crash and restart when it attempts to log the state name involved.
An attacker could cause a possible Denial of Service condition.
There is no known workaround at this time.
All Libreswan users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-vpn/libreswan-3.32"
July 27, 2020
July 27, 2020: 1