Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2015-8023

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
18/11/2015
Last modified:
12/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.3:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.4:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.5:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:4.3.6:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools