Subject: [ GLSA 200907-12 ] ISC DHCP: dhcpclient Remote execution of
arbitrary code
From: Alex Legler <a3li@gentoo.org.>
To: gentoo-announce@gentoo.org
Cc: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
security-alerts@linuxsecurity.com
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Date: Tue, 14 Jul 2009 20:09:03 +0200
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Gentoo Linux Security Advisory GLSA 200907-12
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http://security.gentoo.org/
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Severity: High
Title: ISC DHCP: dhcpclient Remote execution of arbitrary code
Date: July 14, 2009
Bugs: #277729
ID: 200907-12
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Synopsis
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A buffer overflow in dhclient as included in the ISC DHCP
implementation allows for the remote execution of arbitrary code with
root privileges.
Background
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ISC DHCP is the reference implementation of the Dynamic Host
Configuration Protocol as specified in RFC 2131.
Affected packages
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Package / Vulnerable / Unaffected
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1 net-misc/dhcp < 3.1.1-r1 >=3D 3.1.1-r1
Description
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The Mandriva Linux Engineering Team has reported a stack-based buffer
overflow in the subnet-mask handling of dhclient.
Impact
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A remote attacker might set up a rogue DHCP server in a victim's local
network, possibly leading to the execution of arbitrary code with root
privileges.
Workaround
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There is no known workaround at this time.
Resolution
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All ISC DHCP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=3Dnet-misc/dhcp-3.1.1-r1"
References
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[ 1 ] CVE-2009-0692
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-0692
Availability
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This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200907-12.xml
Concerns?
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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
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Copyright 2009 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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