Package : dhcp3 Vulnerability : several Problem type : remote Debian-specific: no CVE Id(s) : CVE-2009-0692 CVE-2009-1892 CERT advisory : VU#410676
The previous dhcp3 update (DSA-1833-1) did not properly apply the required changes to the stable (lenny) version. The old stable (etch) version is not affected by this problem.
The original advisory description follows.
Several remote vulnerabilities have been discovered in ISC's DHCP implementation:
It was discovered that dhclient does not properly handle overlong subnet mask options, leading to a stack-based buffer overflow and possible arbitrary code execution. (CVE-2009-0692)
Christoph Biedl discovered that the DHCP server may terminate when receiving certain well-formed DHCP requests, provided that the server configuration mixes host definitions using "dhcp-client-identifier" and "hardware ethernet". This vulnerability only affects the lenny versions of dhcp3-server and dhcp3-server-ldap. (CVE-2009-1892)
For the stable distribution (lenny), this problem has been fixed in version 3.1.1-6+lenny3.
We recommend that you upgrade your dhcp3 packages.
Upgrade instructions - --------------------
wget url will fetch the file for you dpkg -i file.deb will install the referenced file.
If you are using the apt-get package manager, use the line for sources.list as given below:
apt-get update will update the internal database apt-get upgrade will install corrected packages
You may use an automated update by adding the resources from the footer to the proper configuration.
Debian GNU/Linux 5.0 alias lenny - --------------------------------