Noah Blumenthal's Blog

September 17, 2009

When Rexex is EVIL (or how to lock up an app/server with simple regex)

Filed under: Uncategorized — noahblu @ 2:05 pm

Terrific powerpoint on ReDoS over here

It is believed that Regex performance is fast, but the truth is that the Regex worst case is exponential.  In this presentation we will show how an attacker can easily exploit the Regex worst case and cause an application DoS.

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