Updated ipsec-tools packages that fix a denial of service flaw in racoon are now available for Red Hat Enterprise Linux 5. A denial of service flaw was found in the ipsec-tools racoon daemon. It was possible for a remote attacker, with knowledge of an existing ipsec tunnel, to terminate the ipsec connection between two machines. This update has been rated as having moderate security impact by the Red Hat Security Response Team.

- ---------------------------------------------------------------------                   Red Hat Security Advisory

Synopsis:          Moderate: ipsec-tools security update
Advisory ID:       RHSA-2007:0342-01
Advisory URL:      https://access.redhat.com/errata/RHSA-2007:0342.html
Issue date:        2007-05-17
Updated on:        2007-05-17
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2007-1841 
- ---------------------------------------------------------------------1. Summary:

Updated ipsec-tools packages that fix a denial of service flaw in racoon
are now available for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Problem description:

The ipsec-tools package is used in conjunction with the IPsec functionality
in the linux kernel and includes racoon, an IKEv1 keying daemon.

A denial of service flaw was found in the ipsec-tools racoon daemon. It was
possible for a remote attacker, with knowledge of an existing ipsec tunnel,
to terminate the ipsec connection between two machines. (CVE-2007-1841)

Users of ipsec-tools should upgrade to these updated packages, which
contain a backported patch that resolves this issue.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  

This update is available via Red Hat Network.  Details on how to use 
the Red Hat Network to apply this update are available at

5. Bug IDs fixed (http://bugzilla.redhat.com/):

235388 - CVE-2007-1841 ipsec-tools racoon DoS

6. RPMs required:

Red Hat Enterprise Linux Desktop (v. 5 client):

SRPMS:
57d7bdfbd6b1c69df32360cd6283f2df  ipsec-tools-0.6.5-8.el5.src.rpm

i386:
d6daa68fd3455f01a83a233d532e77f5  ipsec-tools-0.6.5-8.el5.i386.rpm
3a88d33e5a54da7e4161bfe4b9330ad4  ipsec-tools-debuginfo-0.6.5-8.el5.i386.rpm

x86_64:
6e6e394782f74ebba32f0667702a3744  ipsec-tools-0.6.5-8.el5.x86_64.rpm
3bbfae02613f4b804614294ef2cea4fc  ipsec-tools-debuginfo-0.6.5-8.el5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

SRPMS:
57d7bdfbd6b1c69df32360cd6283f2df  ipsec-tools-0.6.5-8.el5.src.rpm

i386:
d6daa68fd3455f01a83a233d532e77f5  ipsec-tools-0.6.5-8.el5.i386.rpm
3a88d33e5a54da7e4161bfe4b9330ad4  ipsec-tools-debuginfo-0.6.5-8.el5.i386.rpm

ia64:
fd56d6b537bc98f32abf93b5b16c2367  ipsec-tools-0.6.5-8.el5.ia64.rpm
446736dd516c45b50fd39c49853c0eae  ipsec-tools-debuginfo-0.6.5-8.el5.ia64.rpm

ppc:
00f092368e9727f83827c4e772da59cf  ipsec-tools-0.6.5-8.el5.ppc.rpm
7d79dc45962236565f93eb77f09235e4  ipsec-tools-debuginfo-0.6.5-8.el5.ppc.rpm

s390x:
4830e931f3b0553e8d4847e9b644ddce  ipsec-tools-0.6.5-8.el5.s390x.rpm
d45f9987cfdc46d880a0e3f7732a4e0f  ipsec-tools-debuginfo-0.6.5-8.el5.s390x.rpm

x86_64:
6e6e394782f74ebba32f0667702a3744  ipsec-tools-0.6.5-8.el5.x86_64.rpm
3bbfae02613f4b804614294ef2cea4fc  ipsec-tools-debuginfo-0.6.5-8.el5.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.cve.org/CVERecord?id=CVE-2007-1841
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact

Copyright 2007 Red Hat, Inc.