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Red Hat Enterprise Linux 6: RHSA-2011:1356-01 Moderate: openswan DoS

red hat
Calendar Grey October 5, 2011
Dist Redhat Esm H88
Recent openswan updates for Red Hat Linux resolve a moderate vulnerability that affects IPsec capabilities.
Updated openswan packages that fix one security issue are now available for Red Hat Enterprise Linux 6

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

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 NULL pointer dereference flaw was found in the way Openswan's pluto IKE daemon handled certain error conditions. A remote, unauthenticated attacker could send a specially-crafted IKE packet that would crash the pluto daemon. (CVE-2011-3380)
Red Hat would like to thank the Openswan project for reporting this issue. Upstream acknowledges Paul Wouters as the original reporter.
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.

Topics%20covered

Topics Covered

security advisory moderate security update DoS Red Hat Enterprise Linux openswan

References

https://access.redhat.com/security/cve/CVE-2011-3380 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: openswan-2.6.32-4.el6_1.2.i686.rpm openswan-debuginfo-2.6.32-4.el6_1.2.i686.rpm
x86_64: openswan-2.6.32-4.el6_1.2.x86_64.rpm openswan-debuginfo-2.6.32-4.el6_1.2.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: openswan-debuginfo-2.6.32-4.el6_1.2.i686.rpm openswan-doc-2.6.32-4.el6_1.2.i686.rpm
x86_64: openswan-debuginfo-2.6.32-4.el6_1.2.x86_64.rpm openswan-doc-2.6.32-4.el6_1.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386: openswan-2.6.32-4.el6_1.2.i686.rpm openswan-debuginfo-2.6.32-4.el6_1.2.i686.rpm
ppc64: openswan-2.6.32-4.el6_1.2.ppc64.rpm openswan-debuginfo-2.6.32-4.el6_1.2.ppc64.rpm
s390x: openswan-2.6.32-4.el6_1.2.s390x.rpm openswan-debuginfo-2.6.32-4.el6_1.2.s390x.rpm
x86_64: openswan-2.6.32-4.el6_1.2.x86_64.rpm openswan-debuginfo-2.6.32-4.el6_1.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386: openswan-debuginfo-2.6.32-4.el6_1.2.i686.rpm openswan-doc-2.6.32-4.el6_1.2.i686.rpm
ppc64: openswan-debuginfo-2.6.32-4.el6_1.2.ppc64.rpm openswan-doc-2.6.32-4.el6_1.2.ppc64.rpm
s390x: openswan-debuginfo-2.6.32-4.el6_1.2.s390x.rpm openswan-doc-2.6.32-4.el6_1.2.s390x.rpm
x86_64: openswan-debuginfo-2.6.32-4.el6_1.2.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1356-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1356.html
Issue date: 2011-10-05

Topic

Updated openswan packages that fix one security issue are now available forRed Hat Enterprise Linux 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.

Topics%20covered

Topics Covered

security advisory moderate security update DoS Red Hat Enterprise Linux openswan

Relevant Releases Architectures

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

742065 - CVE-2011-3380 openswan: IKE invalid key length allows remote unauthenticated user to crash openswan

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