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PHP filesystem attack vectors

February 8, 2009 at 3:13 am - Filed under Hacks, Language EN - 6792 words, reading time ~22 minutes - Permalink - Comments

On Apr 07, 2008 I spoke with Kuza55 and Wisec about an attack I found some time before that was a new attack vector for filesystem functions (fopen, (include|require)[_once]?, file_(put|get)_contents, etc) for the PHP language. It was a path normalization issue and I asked them to keep it "secret" [4], this was a good idea cause my analisys was mostly incomplete and erroneous but the idea was good and the bug was real and disposable.

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