Scientific Linux Security Update : openswan on SL5.x, SL6.x i386/x86_64

medium Nessus Plugin ID 61167

Language:

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

Openswan is a free implementation of Internet Protocol Security (IPsec) and Internet Key Exchange (IKE). IPsec uses strong cryptography to provide both authentication and encryption services.
These services allow you to build secure tunnels through untrusted networks.

A use-after-free flaw was found in the way Openswan's pluto IKE daemon used cryptographic helpers. A remote, authenticated attacker could send a specially crafted IKE packet that would crash the pluto daemon.
This issue only affected SMP (symmetric multiprocessing) systems that have the cryptographic helpers enabled. The helpers are disabled by default on Scientific Linux 5, but enabled by default on Scientific Linux 6. (CVE-2011-4073)

All users of openswan are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.
After installing this update, the ipsec service will be restarted automatically.

Solution

Update the affected openswan, openswan-debuginfo and / or openswan-doc packages.

Plugin Details

Severity: Medium

ID: 61167

File Name: sl_20111102_openswan_on_SL5_x.nasl

Version: 1.7

Type: local

Agent: unix

Family: Scientific Linux Local Security Checks

Published: 8/1/2012

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 11/2/2011

Reference Information

CVE: CVE-2011-4073

Detections

Analytics