Vulnerability DatabaseCVE-2015-8023
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CVE-2015-8023
Published:November 18, 2015
Updated:May 17, 2026
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.
Related Resources (8)
http://www.ubuntu.com/usn/USN-2811-1
https://security-tracker.debian.org/tracker/CVE-2015-8023
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html
http://www.securityfocus.com/bid/84947
http://www.debian.org/security/2015/dsa-3398
http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html
https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-8023
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CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
CVSS v2
Base Score:
5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
0.80