bugtraq - [ MDVSA-2012:115 ] dhcp

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Date: Thu, 26 Jul 2012 19:00:00 +0200
From: security@...driva.com
To: bugtraq@...urityfocus.com
Subject: [ MDVSA-2012:115 ] dhcp

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 _______________________________________________________________________

 Mandriva Linux Security Advisory                         MDVSA-2012:115
 http://www.mandriva.com/security/
 _______________________________________________________________________

 Package : dhcp
 Date    : July 26, 2012
 Affected: 2011.
 _______________________________________________________________________

 Problem Description:

 Multiple vulnerabilities has been discovered and corrected in ISC DHCP:
 
 An unexpected client identifier parameter can cause the ISC DHCP
 daemon to segmentation fault when running in DHCPv6 mode, resulting
 in a denial of service to further client requests. In order to exploit
 this condition, an attacker must be able to send requests to the DHCP
 server (CVE-2012-3570
 
 An error in the handling of malformed client identifiers can cause
 a DHCP server running affected versions (see Impact) to enter a
 state where further client requests are not processed and the server
 process loops endlessly, consuming all available CPU cycles. Under
 normal circumstances this condition should not be triggered, but a
 non-conforming or malicious client could deliberately trigger it in
 a vulnerable server. In order to exploit this condition an attacker
 must be able to send requests to the DHCP server (CVE-2012-3571
 
 Two memory leaks have been found and fixed in ISC DHCP. Both are
 reproducible when running in DHCPv6 mode (with the -6 command-line
 argument.) The first leak is confirmed to only affect servers
 operating in DHCPv6 mode, but based on initial code analysis the
 second may theoretically affect DHCPv4 servers (though this has not
 been demonstrated.) (CVE-2012-3954).
 
 The updated packages have been upgraded to the latest version
 (4.2.4-P1) which is not affected by these issues.
 _______________________________________________________________________

 References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3570
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3571
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3954
 _______________________________________________________________________

 Updated Packages:

 Mandriva Linux 2011:
 5153e3eb1b4ceca9f800544d13ef6872  2011/i586/dhcp-client-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm
 8c6117c838ec86e12abe5ea1efa12f85  2011/i586/dhcp-common-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm
 03dd3ee3fe46a4bc255a20bc0a3f4edd  2011/i586/dhcp-devel-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm
 e6fb5efee36e445626e3e52314cb24e1  2011/i586/dhcp-doc-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm
 4da38e33e8542ae24e59f475a216dc88  2011/i586/dhcp-relay-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm
 af313c55824cd839740cd03556b43650  2011/i586/dhcp-server-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm 
 c6766b7bfe76fbbbfe19df2a08863c47  2011/SRPMS/dhcp-4.2.4-0.P1.1.1.src.rpm

 Mandriva Linux 2011/X86_64:
 d59247271566158ed3ce91748e8bd244  2011/x86_64/dhcp-client-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm
 66e0771c5304de4550560bd39aa40f77  2011/x86_64/dhcp-common-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm
 37d678da37bb3b21a14a1e68619342de  2011/x86_64/dhcp-devel-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm
 5311a79668ab721cd829061f48dbbf39  2011/x86_64/dhcp-doc-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm
 5c59c00623d6b3a3a2130a5a467a9d33  2011/x86_64/dhcp-relay-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm
 cc93817435d581230d1e7fcee425abb3  2011/x86_64/dhcp-server-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm 
 c6766b7bfe76fbbbfe19df2a08863c47  2011/SRPMS/dhcp-4.2.4-0.P1.1.1.src.rpm
 _______________________________________________________________________

 To upgrade automatically use MandrivaUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 All packages are signed by Mandriva for security.  You can obtain the
 GPG public key of the Mandriva Security Team by executing:

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:

  http://www.mandriva.com/security/advisories

 If you want to report vulnerabilities, please contact

  security_(at)_mandriva.com
 _______________________________________________________________________

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Mandriva Security Team
  <security*mandriva.com>
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