USN-1095-1: Quagga vulnerabilities

29 March 2011

quagga vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

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

Software Description

  • quagga - BGP/OSPF/RIP routing daemon

Details

It was discovered that Quagga incorrectly parsed certain malformed extended communities. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. (CVE-2010-1674)

It was discovered that Quagga resets BGP sessions when encountering malformed AS_PATHLIMIT attributes. A remote attacker could use this flaw to disrupt BGP sessions, resulting in a denial of service. This update removes AS_PATHLIMIT support from Quagga. This issue only affected Ubuntu 8.04 LTS, 9.10, 10.04 LTS and 10.10. (CVE-2010-1675)

Update instructions

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

Ubuntu 10.10
quagga - 0.99.17-1ubuntu0.1
Ubuntu 10.04 LTS
quagga - 0.99.15-1ubuntu0.2
Ubuntu 9.10
quagga - 0.99.13-1ubuntu0.2
Ubuntu 8.04 LTS
quagga - 0.99.9-2ubuntu1.5
Ubuntu 6.06 LTS
quagga - 0.99.2-1ubuntu3.8

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References