A vulnerability in some "random ad server" software wouldn't be terrible big news, but in this case I decided to spent a couple minutes on it. OpenX is somewhat popular, and used by various sites to server ads. Not only that... the vulnerability is actively being exploited. And to make things worse: The OpenX.com site is down, so you can't download a patch or any details "direct from the source".

We have seen compromised ad servers being used in the past to inject malicious content into various "trusted" pages and I am a bit afraid that we will see some of this with these OpenX vulnerabilities.

For more details: http://blog.sucuri.net/2010/09/openx-users-time-to-upgrade.html

(thanks to David of Sucuri for the heads up)

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Johannes B. Ullrich, Ph.D.
SANS Technology Institute
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