bugtraq - [ MDVSA-2013:072 ] dnsmasq

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Date: Mon, 08 Apr 2013 21:46:00 +0200
From: security@...driva.com
To: bugtraq@...urityfocus.com
Subject: [ MDVSA-2013:072 ] dnsmasq

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 _______________________________________________________________________

 Mandriva Linux Security Advisory                         MDVSA-2013:072
 http://www.mandriva.com/en/support/security/
 _______________________________________________________________________

 Package : dnsmasq
 Date    : April 8, 2013
 Affected: Business Server 1.0
 _______________________________________________________________________

 Problem Description:

 Updated dnsmasq packages fix security vulnerabilities:
 
 When dnsmasq before 2.63 is used in conjunctions with certain
 configurations of libvirtd, network packets from prohibited networks
 (e.g. packets that should not be passed in) may be sent to the dnsmasq
 application and processed. This can result in DNS amplification
 attacks for example (CVE-2012-3411).
 
 This update adds a new option --bind-dynamic which is immune to
 this problem.
 
 Updated dnsmasq packages fix security vulnerabilities (CVE-2013-0198):
 
 This update completes the fix for CVE-2012-3411 provided with
 dnsmasq-2.63. It was found that after the upstream patch for
 CVE-2012-3411 issue was applied, dnsmasq still:
 
 - replied to remote TCP-protocol based DNS queries (UDP protocol
 ones were corrected, but TCP ones not) from prohibited networks,
 when the --bind-dynamic option was used,
 
 - when --except-interface lo option was used dnsmasq didn&#039;t answer
 local or remote UDP DNS queries, but still allowed TCP protocol based
 DNS queries,
 
 - when --except-interface lo option was not used local / remote TCP
 DNS queries were also still answered by dnsmasq.
 
 This update fix these three cases.
 _______________________________________________________________________

 References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3411
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0198
 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0273
 https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0030
 _______________________________________________________________________

 Updated Packages:

 Mandriva Business Server 1/X86_64:
 89bdd7af8963a0c0e51a52b5b08295b0  mbs1/x86_64/dnsmasq-2.63-1.mbs1.x86_64.rpm
 1b45290efb8694734cfa1616b5ef6294  mbs1/x86_64/dnsmasq-base-2.63-1.mbs1.x86_64.rpm 
 8782b678c40e2c8ccedb39f60e2b6f0d  mbs1/SRPMS/dnsmasq-2.63-1.mbs1.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/en/support/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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