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Openswan: Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201203-13 / Openswan
Release Date March 16, 2012
Latest Revision March 16, 2012: 1
Impact normal
Exploitable local, remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/openswan < 2.6.37 >= 2.6.37 All supported architectures

Related bugreports: #372961, #389097

Synopsis

Multiple vulnerabilities in Openswan may create a Denial of Service condition.

2.  Impact Information

Background

Openswan is an implementation of IPsec for Linux.

Description

Two vulnerabilities have been found in Openswan:

  • Improper permissions are used on /var/run/starter.pid and /var/lock/subsys/ipsec (CVE-2011-2147).
  • Openswan contains a use-after-free error in the cryptographic helper handler (CVE-2011-4073).

Impact

A remote authenticated attacker or a local attacker may be able to cause a Denial of Service condition.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Openswan users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/openswan-2.6.37"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since November 10, 2011. It is likely that your system is already no longer affected by this issue.

4.  References



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Page updated March 16, 2012

Summary: This is a Gentoo Linux Security Advisory

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