Ubuntu alert USN-1190-1 (dhcp3, isc-dhcp)

From:
    	     
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-1190-1] DHCP vulnerabilities 
Date:
    	     
 
Mon, 15 Aug 2011 09:30:01 -0400
Message-ID:
    	     
 
<1313415001.2596.101.camel@mdlinux>
Archive-link:
    	     
 
Article, Thread
              
==========================================================================
Ubuntu Security Notice USN-1190-1
August 15, 2011

dhcp3, isc-dhcp vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

An attacker could send crafted input to DHCP and cause it to crash.

Software Description:
- isc-dhcp: DHCP server and client
- dhcp3: DHCP server and client

Details:

David Zych discovered that DHCP incorrectly handled certain malformed
packets. A remote attacker could use this issue to cause DHCP to crash,
resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  isc-dhcp-server                 4.1.1-P1-15ubuntu9.1

Ubuntu 10.10:
  dhcp3-server                    3.1.3-2ubuntu6.3

Ubuntu 10.04 LTS:
  dhcp3-server                    3.1.3-2ubuntu3.3

Ubuntu 8.04 LTS:
  dhcp3-server                    3.0.6.dfsg-1ubuntu9.3

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1190-1
  CVE-2011-2748, CVE-2011-2749

Package Information:
  https://launchpad.net/ubuntu/+source/isc-dhcp/4.1.1-P1-15...
  https://launchpad.net/ubuntu/+source/dhcp3/3.1.3-2ubuntu6.3
  https://launchpad.net/ubuntu/+source/dhcp3/3.1.3-2ubuntu3.3
  https://launchpad.net/ubuntu/+source/dhcp3/3.0.6.dfsg-1ub...


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