USN-531-2: dhcp vulnerability

Releases

• Ubuntu 7.10
• Ubuntu 7.04
• Ubuntu 6.10
• Ubuntu 6.06

Packages

• dhcp -

Details

USN-531-1 fixed vulnerabilities in dhcp. The fixes were incomplete,
and only reduced the scope of the vulnerability, without fully solving
it. This update fixes the problem.

Original advisory details:

Nahuel Riva and Gerardo Richarte discovered that the DHCP server did not
correctly handle certain client options. A remote attacker could send
malicious DHCP replies to the server and execute arbitrary code.

Update instructions

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

Ubuntu 7.10

• dhcp - 2.0pl5dfsg1-20ubuntu1.2

Ubuntu 7.04

• dhcp - 2.0pl5-19.5ubuntu2.2

Ubuntu 6.10

• dhcp - 2.0pl5-19.4ubuntu1.2

Ubuntu 6.06

• dhcp - 2.0pl5-19.4ubuntu0.2

In general, a standard system upgrade is sufficient to effect the
necessary changes.

References

• CVE-2007-5365

Related notices

• USN-531-1: dhcp