Debian DSA-3282-1 : strongswan - security update

low Nessus Plugin ID 84026

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Synopsis

The remote Debian host is missing a security-related update.

Description

Alexander E. Patrakov discovered an issue in strongSwan, an IKE/IPsec suite used to establish IPsec protected links.

When an IKEv2 client authenticates the server with certificates and the client authenticates itself to the server using pre-shared key or EAP, the constraints on the server certificate are only enforced by the client after all authentication steps are completed successfully.
A rogue server which can authenticate using a valid certificate issued by any CA trusted by the client could trick the user into continuing the authentication, revealing the username and password digest (for EAP) or even the cleartext password (if EAP-GTC is accepted).

Solution

Upgrade the strongswan packages.

For the oldstable distribution (wheezy), this problem has been fixed in version 4.5.2-1.5+deb7u7.

For the stable distribution (jessie), this problem has been fixed in version 5.2.1-6+deb8u1.

Plugin Details

Severity: Low

ID: 84026

File Name: debian_DSA-3282.nasl

Version: 2.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/9/2015

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:strongswan, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2015

Reference Information

CVE: CVE-2015-4171

DSA: 3282

Detections

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