CVE-2015-8023

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.

Score

CVSS 2.0 5.0 Medium

Status

Modified - cve@mitre.org

Published

2015-11-18

Last modified

2024-08-06

Weaknesses

CWE-20, CWE-264

Affected products

• Ubuntu Linux (Canonical)
• Strongswan (Strongswan)

References

• 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-%28cve-2015-8023%29.html