Debian DLA-1059-1 : strongswan security update

high Nessus Plugin ID 102594

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was a denial of service vulnerability in the Strongswan Virtual Private Network (VPN) software.

Specific RSA signatures passed to the gmp plugin for verification could cause a NULL pointer dereference. Potential triggers are signatures in certificates, but also signatures used during IKE authentication.

For more details, please see :

<https://www.strongswan.org/blog/2017/08/14/strongswan-vulnerability-( cve-2017-11185).html>

For Debian 7 'Wheezy', this issue has been fixed in strongswan version 4.5.2-1.5+deb7u10.

We recommend that you upgrade your strongswan packages.

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

Solution

Upgrade the affected packages.

Plugin Details

Severity: High

ID: 102594

File Name: debian_DLA-1059.nasl

Version: 3.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/21/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:strongswan-ikev1, cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:strongswan-nm, p-cpe:/a:debian:debian_linux:strongswan-ikev2, p-cpe:/a:debian:debian_linux:strongswan-starter, p-cpe:/a:debian:debian_linux:strongswan, p-cpe:/a:debian:debian_linux:libstrongswan, p-cpe:/a:debian:debian_linux:strongswan-dbg

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/18/2017

Reference Information

CVE: CVE-2017-11185

Detections

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