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USN-1190-1: DHCP vulnerabilities

15 August 2011

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 8.04
Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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

References

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Further reading