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full-disclosure-uk: [Full-disclosure] [ GLSA 200705-09 ] IPsec-T

[Full-disclosure] [ GLSA 200705-09 ] IPsec-Tools: Denial of Service

From: Raphael Marichez <falco_at_nospam>
Date: Tue May 08 2007 - 13:11:07 GMT
To: gentoo-announce@gentoo.org

  • - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200705-09
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Severity: Normal Title: IPsec-Tools: Denial of Service Date: May 08, 2007 Bugs: #173219 ID: 200705-09
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Synopsis


IPsec-Tools contains a vulnerability that allows a remote attacker to crash the IPsec tunnel.

Background


IPsec-Tools is a port of KAME's implementation of the IPsec utilities. It contains a collection of network monitoring tools, including racoon, ping, and ping6.

Affected packages



Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-firewall/ipsec-tools < 0.6.7 >= 0.6.7

Description


The isakmp_info_recv() function in src/racoon/isakmp_inf.c does not always check that DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N) packets are encrypted.

Impact


A remote attacker could send a specially crafted IPsec message to one of the two peers during the beginning of phase 1, resulting in the termination of the IPsec exchange.

Workaround


There is no known workaround at this time.

Resolution


All IPsec-Tools users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-firewall/ipsec-tools-0.6.7"

References


  [ 1 ] CVE-2007-1841
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1841

Availability


This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200705-09.xml

Concerns?


Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.

License


Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5



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