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Openswan: Denial of Service


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


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

2.  Impact Information


Openswan is an implementation of IPsec for Linux.


Two vulnerabilities have been found in Openswan:

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


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

3.  Resolution Information


There is no known workaround at this time.


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


Page updated March 16, 2012

Summary: This is a Gentoo Linux Security Advisory

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