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17 Mar 2004: OpenSSL update

What a busy day; doing the OpenSSL release manager role for the recent security updates, testing packages, dealing with the third parties, being a third party, rolling, pushing, correcting.

What is disturbing is a report from a third party company who is vulnerable to one of the Denial of service issues that said that it wasn't a security issue as their were hundreds of other possible DoS attacks. Actually, this attack causes OpenSSL to crash. We've got a proof of concept, you don't have to send more than a kb of data to get OpenSSL to crash remotely. This can be quite serious if you have a service that can't recover from that. Things like Apache (when running in its default prefork memory model) can recover quite well - they just spawn off a new child to replace the dead one. This is going to use up some extra resources, but depending on the platform it's quite minor (and will stop as soon as the attacker stops sending malicious packets). Not everything that listens to the network that uses OpenSSL is so resiliant.

Going to be in London next weekend?

Created: 17 Mar 2004
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Hi! I'm Mark Cox. This blog gives my thoughts and opinions on my security work, open source, fedora, home automation, and other topics.