CVE-2011-4868: dhcpd crashes in certain IPv6 configurations

Debian Bug report logs - #655746
CVE-2011-4868: dhcpd crashes in certain IPv6 configurations

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Florian Weimer <fw@deneb.enyo.de>

To: submit@bugs.debian.org

Subject: CVE-2011-4868: dhcpd crashes in certain IPv6 configurations

Date: Fri, 13 Jan 2012 20:34:29 +0100

Package: isc-dhcp
Version: 4.2.2-2
Tags: security

ISC has disclosed a security vulnerability in dhcpd:

| Due to improper handling of a DHCPv6 lease structure, ISC DHCP
| servers that are serving IPv6 address pools AND using Dynamic DNS
| can encounter a segmentation fault error while updating lease status
| under certain conditions. The potential exists for this condition to
| be intentionally triggered, resulting in effective denial of service
| to clients expecting service from the affected server.

<http://www.isc.org/software/dhcp/advisories/cve-2011-4868>

This seems of low impact.  According to ISC, the squeeze version
should not be affected, so no action seems required for
stable-security.

Message #10 received at 655746-close@bugs.debian.org (full text, mbox, reply):

From: Michael Gilbert <mgilbert@debian.org>

To: 655746-close@bugs.debian.org

Subject: Bug#655746: fixed in isc-dhcp 4.2.2.dfsg.1-5

Date: Sat, 28 Apr 2012 20:47:26 +0000

Source: isc-dhcp
Source-Version: 4.2.2.dfsg.1-5

We believe that the bug you reported is fixed in the latest version of
isc-dhcp, which is due to be installed in the Debian FTP archive:

isc-dhcp-client-dbg_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-client-dbg_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-client-udeb_4.2.2.dfsg.1-5_amd64.udeb
  to main/i/isc-dhcp/isc-dhcp-client-udeb_4.2.2.dfsg.1-5_amd64.udeb
isc-dhcp-client_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-client_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-common_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-common_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-dev_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-dev_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-relay-dbg_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-relay-dbg_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-relay_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-relay_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-server-dbg_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-server-dbg_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-server-ldap_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-server-ldap_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp-server_4.2.2.dfsg.1-5_amd64.deb
  to main/i/isc-dhcp/isc-dhcp-server_4.2.2.dfsg.1-5_amd64.deb
isc-dhcp_4.2.2.dfsg.1-5.debian.tar.gz
  to main/i/isc-dhcp/isc-dhcp_4.2.2.dfsg.1-5.debian.tar.gz
isc-dhcp_4.2.2.dfsg.1-5.dsc
  to main/i/isc-dhcp/isc-dhcp_4.2.2.dfsg.1-5.dsc



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 655746@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Michael Gilbert <mgilbert@debian.org> (supplier of updated isc-dhcp package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Sat, 28 Apr 2012 16:00:49 -0400
Source: isc-dhcp
Binary: isc-dhcp-server isc-dhcp-server-dbg isc-dhcp-server-ldap isc-dhcp-common isc-dhcp-dev isc-dhcp-client isc-dhcp-client-dbg isc-dhcp-client-udeb isc-dhcp-relay isc-dhcp-relay-dbg
Architecture: source amd64
Version: 4.2.2.dfsg.1-5
Distribution: unstable
Urgency: medium
Maintainer: Debian ISC DHCP maintainers <pkg-dhcp-devel@lists.alioth.debian.org>
Changed-By: Michael Gilbert <mgilbert@debian.org>
Description: 
 isc-dhcp-client - ISC DHCP client
 isc-dhcp-client-dbg - ISC DHCP client (debugging symbols)
 isc-dhcp-client-udeb - ISC DHCP Client for debian-installer (udeb)
 isc-dhcp-common - common files used by all the isc-dhcp* packages
 isc-dhcp-dev - API for accessing and modifying the DHCP server and client state
 isc-dhcp-relay - ISC DHCP relay daemon
 isc-dhcp-relay-dbg - DHCP relay daemon (debugging symbols)
 isc-dhcp-server - ISC DHCP server for automatic IP address assignment
 isc-dhcp-server-dbg - ISC DHCP server for automatic IP address assignment (debug)
 isc-dhcp-server-ldap - DHCP server able to use LDAP as backend
Closes: 151820 652259 655746
Changes: 
 isc-dhcp (4.2.2.dfsg.1-5) unstable; urgency=medium
 .
   [ Andrew Pollock ]
   * debian/dhclient.conf: send the hostname (closes: #151820)
 .
   [ Michael Gilbert ]
   * Fix cve-2011-4868: error in DDNS handling with IPv6 (closes: #655746)
   * Fix cve-2011-4539: error in regular expression handling
     (closes: #652259)
   * Make dependencies diff-able
   * Add myself to uploaders
   * Remove all automatically generated files in clean rule
   * Medium urgency for security updates
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