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AUSCERT External Security Bulletin Redistribution
ESB-2011.1098
Moderate: openswan security update
4 November 2011
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: openswan
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 5
Red Hat Enterprise Linux WS/Desktop 5
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux WS/Desktop 6
Linux variants
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2011-4073
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2011-1422.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running openswan check for an updated version of the software for
their operating system.
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Red Hat Security Advisory
Synopsis: Moderate: openswan security update
Advisory ID: RHSA-2011:1422-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1422.html
Issue date: 2011-11-02
CVE Names: CVE-2011-4073
=====================================================================
1. Summary:
Updated openswan packages that fix one security issue are now available for
Red Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. 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 Red
Hat Enterprise Linux 5, but enabled by default on Red Hat Enterprise Linux
6. (CVE-2011-4073)
Red Hat would like to thank the Openswan project for reporting this issue.
Upstream acknowledges Petar Tsankov, Mohammad Torabi Dashti and David Basin
of the information security group at ETH Zurich as the original reporters.
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.
4. Solution:
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
748961 - CVE-2011-4073 openswan: use-after-free vulnerability leads to DoS
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openswan-2.6.21-5.el5_7.6.src.rpm
i386:
openswan-2.6.21-5.el5_7.6.i386.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.i386.rpm
openswan-doc-2.6.21-5.el5_7.6.i386.rpm
x86_64:
openswan-2.6.21-5.el5_7.6.x86_64.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.x86_64.rpm
openswan-doc-2.6.21-5.el5_7.6.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openswan-2.6.21-5.el5_7.6.src.rpm
i386:
openswan-2.6.21-5.el5_7.6.i386.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.i386.rpm
openswan-doc-2.6.21-5.el5_7.6.i386.rpm
ia64:
openswan-2.6.21-5.el5_7.6.ia64.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.ia64.rpm
openswan-doc-2.6.21-5.el5_7.6.ia64.rpm
ppc:
openswan-2.6.21-5.el5_7.6.ppc.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.ppc.rpm
openswan-doc-2.6.21-5.el5_7.6.ppc.rpm
s390x:
openswan-2.6.21-5.el5_7.6.s390x.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.s390x.rpm
openswan-doc-2.6.21-5.el5_7.6.s390x.rpm
x86_64:
openswan-2.6.21-5.el5_7.6.x86_64.rpm
openswan-debuginfo-2.6.21-5.el5_7.6.x86_64.rpm
openswan-doc-2.6.21-5.el5_7.6.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-2.6.32-4.el6_1.4.i686.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
x86_64:
openswan-2.6.32-4.el6_1.4.x86_64.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
openswan-doc-2.6.32-4.el6_1.4.i686.rpm
x86_64:
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
openswan-doc-2.6.32-4.el6_1.4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-2.6.32-4.el6_1.4.i686.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
ppc64:
openswan-2.6.32-4.el6_1.4.ppc64.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.ppc64.rpm
s390x:
openswan-2.6.32-4.el6_1.4.s390x.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.s390x.rpm
x86_64:
openswan-2.6.32-4.el6_1.4.x86_64.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
openswan-doc-2.6.32-4.el6_1.4.i686.rpm
ppc64:
openswan-debuginfo-2.6.32-4.el6_1.4.ppc64.rpm
openswan-doc-2.6.32-4.el6_1.4.ppc64.rpm
s390x:
openswan-debuginfo-2.6.32-4.el6_1.4.s390x.rpm
openswan-doc-2.6.32-4.el6_1.4.s390x.rpm
x86_64:
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
openswan-doc-2.6.32-4.el6_1.4.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-2.6.32-4.el6_1.4.i686.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
x86_64:
openswan-2.6.32-4.el6_1.4.x86_64.rpm
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openswan-2.6.32-4.el6_1.4.src.rpm
i386:
openswan-debuginfo-2.6.32-4.el6_1.4.i686.rpm
openswan-doc-2.6.32-4.el6_1.4.i686.rpm
x86_64:
openswan-debuginfo-2.6.32-4.el6_1.4.x86_64.rpm
openswan-doc-2.6.32-4.el6_1.4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2011-4073.html
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc.
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