Ubuntu 14.04 LTS / 15.04 / 15.10 : strongswan vulnerability (USN-2811-1)

medium Nessus Plugin ID 86896


The remote Ubuntu host is missing a security-related patch.


It was discovered that the strongSwan eap-mschapv2 plugin incorrectly handled state. A remote attacker could use this issue to bypass authentication.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected strongswan-plugin-eap-mschapv2 package.

See Also


Plugin Details

Severity: Medium

ID: 86896

File Name: ubuntu_USN-2811-1.nasl

Version: 2.9

Type: local

Agent: unix

Published: 11/17/2015

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information


Risk Factor: Low

Score: 3.4


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-mschapv2, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:15.04, cpe:/o:canonical:ubuntu_linux:15.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/16/2015

Vulnerability Publication Date: 11/18/2015

Reference Information

CVE: CVE-2015-8023

USN: 2811-1