Gentoo Linux Advisory: ipsec-tools, iputils

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Gentoo Linux Security Advisory GLSA 200404-17

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http://security.gentoo.org/

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Severity: Normal
Title: ipsec-tools and iputils contain a remote DoS
vulnerability
Date: April 24, 2004
Bugs: #48847
ID: 200404-17

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Synopsis

racoon, which is included in the ipsec-tools and iputils
packages in Portage, does not check the length of ISAKMP headers.
Attackers may be able to craft an ISAKMP header of sufficient
length to consume all available system resoources, causing a Denial
of Service.

Background

From http://ipsec-tools.sourceforge.net/
:

“IPsec-Tools is a port of KAME’s IPsec utilities to the
Linux-2.6 IPsec implementation.”

iputils is a collection of network monitoring tools, including
racoon, ping and ping6.

Affected packages

Description

When racoon receives an ISAKMP header, it allocates memory based
on the length of the header field. Thus, an attacker may be able to
cause a Denial of Services by creating a header that is large
enough to consume all available system resources.

Impact

This vulnerability may allow an attacker to remotely cause a
Denial of Service.

Workaround

A workaround is not currently known for this issue. All users
are advised to upgrade to the latest version of the affected
package.

Resolution

ipsec-tools users should upgrade to version 0.2.5 or later:

    # emerge sync
    # emerge -pv ">=3Dnet-firewall/ipsec-tools-0.3.1"
    # emerge ">=3Dnet-firewall/ipsec-tools-0.3.1"

iputils users should upgrade to version 021109-r3 or later:

    # emerge sync
    # emerge -pv ">=3Dnet-misc/iputils-021109-r3"
    # emerge ">=3Dnet-misc/iputils-021109-r3"

References

[ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2004-0403

Availability

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

http://security.gentoo.org/glsa/glsa-200404-17.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 2004 Gentoo Technologies, 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/1.0