(Red Hat Issues Fix) IPsec-Tools isakmp_info_recv() Function Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1018087 |
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SecurityTracker URL: http://securitytracker.com/id/1018087
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CVE Reference:
CVE-2007-1841
(Links to External Site)
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Date: May 18 2007
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 0.6.x prior to 0.6.7
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Description:
A vulnerability was reported in IPsec-Tools. A remote user can cause denial of service conditions.
A remote user can send specially crafted data to trigger a flaw in the isakmp_info_recv() function in 'src/racoon/isakmp_inf.c' and cause the target tunnel to crash. Specially crafted DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N) messages sent during phase 1 can be used to exploit this flaw.
Aaron Sigel from Apple reported this vulnerability.
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Impact:
A remote user can cause tunnels to crash.
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Solution:
Red Hat has released a fix.
The Red Hat advisory is available at:
https://rhn.redhat.com/errata/RHSA-2007-0342.html
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Vendor URL: ipsec-tools.sourceforge.net/ (Links to External Site)
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Cause:
Input validation error, State error
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Underlying OS:
Linux (Red Hat Enterprise)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 17 May 2007 10:17:54 -0400
Subject: [RHSA-2007:0342-01] Moderate: ipsec-tools security update
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- ---------------------------------------------------------------------
Red Hat Security Advisory
Synopsis: Moderate: ipsec-tools security update
Advisory ID: RHSA-2007:0342-01
Advisory URL: https://rhn.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
http://kbase.redhat.com/faq/FAQ_58_10188
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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/ipsec-tools-0.6.5-8.el5.src.rpm
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:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/ipsec-tools-0.6.5-8.el5.src.rpm
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://www.redhat.com/security/team/key/#package
7. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1841
http://www.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2007 Red Hat, Inc.
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