Red Hat: 2011:1422-01: openswan: Moderate Advisory
Summary
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.
Summary
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
References
https://www.redhat.com/security/data/cve/CVE-2011-4073.html https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
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:
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:
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:
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:
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:
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:
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:
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
Topic
Updated openswan packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
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
Bugs Fixed
748961 - CVE-2011-4073 openswan: use-after-free vulnerability leads to DoS