CVE-2015-8023 Information

Description

The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.

Reference

http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html http://www.debian.org/security/2015/dsa-3398 http://www.securityfocus.com/bid/84947 http://www.ubuntu.com/usn/USN-2811-1 https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-(cve-2015-8023).html