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USN-775-2: Quagga regression

9 June 2009

Quagga regression

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Details

USN-775-1 fixed vulnerabilities in Quagga. The preventative fixes
introduced in Quagga prior to Ubuntu 9.04 could result in BGP service
failures. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the BGP service in Quagga did not correctly
handle certain AS paths containing 4-byte ASNs. An authenticated remote
attacker could exploit this flaw to cause bgpd to abort, leading to 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 8.10
Ubuntu 8.04
Ubuntu 6.06

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

References

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