RHEL 7 : libreswan (RHSA-2016:2603)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for libreswan is now available for Red Hat Enterprise Linux
7.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Libreswan is an implementation of IPsec & IKE for Linux. IPsec is the
Internet Protocol Security and uses strong cryptography to provide
both authentication and encryption services. These services allow you
to build secure tunnels through untrusted networks such as virtual
private network (VPN).

Security Fix(es) :

* A traffic amplification flaw was found in the Internet Key Exchange
version 1 (IKEv1) protocol. A remote attacker could use a libreswan
server with IKEv1 enabled in a network traffic amplification denial of
service attack against other hosts on the network by sending UDP
packets with a spoofed source address to that server. (CVE-2016-5361)

Additional Changes :

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.3 Release Notes linked from the References section.

See also :

https://www.redhat.com/security/data/cve/CVE-2016-5361.html
https://libreswan.org/security/CVE-2016-5361/CVE-2016-5361.txt
http://www.nessus.org/u?e4086253
http://rhn.redhat.com/errata/RHSA-2016-2603.html

Solution :

Update the affected libreswan and / or libreswan-debuginfo packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.8
(CVSS2#E:F/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 94566 ()

Bugtraq ID:

CVE ID: CVE-2016-5361

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