[SECURITY] [DSA 2216-1] isc-dhcp security update

ID DEBIAN:DSA-2216-1:E5390
Type debian
Reporter Debian
Modified 2011-04-10T22:12:08


Debian Security Advisory DSA-2216-1 security@debian.org http://www.debian.org/security/ Nico Golde April 10, 2011 http://www.debian.org/security/faq

Package : isc-dhcp Vulnerability : missing input sanitization Problem type : remote Debian-specific: no CVE ID : CVE-2011-0997 Debian bug : 621099

Sebastian Krahmer and Marius Tomaschewski discovered that dhclient of isc-dhcp, a DHCP client, is not properly filtering shell meta-characters in certain options in DHCP server responses. These options are reused in an insecure fashion by dhclient scripts. This allows an attacker to execute arbitrary commands with the privileges of such a process by sending crafted DHCP options to a client using a rogue server.

For the oldstable distribution (lenny), this problem has been fixed in additional update for dhcp3.

For the stable distribution (squeeze), this problem has been fixed in version 4.1.1-P1-15+squeeze2.

For the testing distribution (wheezy), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in version 4.1.1-P1-16.1.

We recommend that you upgrade your isc-dhcp packages.

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org