1. Ubuntu Security Notices
  2. USN-1190-1

USN-1190-1: DHCP vulnerabilities

Publication date

15 August 2011

Overview

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

Releases

Packages

  • dhcp3 - DHCP server and client
  • isc-dhcp - 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
8.04 hardy dhcp3-server –  3.0.6.dfsg-1ubuntu9.3
11.04 natty isc-dhcp-server –  4.1.1-P1-15ubuntu9.1
10.10 maverick dhcp3-server –  3.1.3-2ubuntu6.3
10.04 lucid dhcp3-server –  3.1.3-2ubuntu3.3

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References

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