RE: Details on new vulnerability against Apache POI usage ?

2017-04-27 Thread Allison, Timothy B.
If you're processing a specially crafted docx/xlsx/pptx (and their macro brethren), you could be vulnerable to: https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Processing POI-colleagues, please correct me if I'm wrong, but you'd trigger this if you ran an extractor or even if you jus

Re: Details on new vulnerability against Apache POI usage ?

2017-04-27 Thread Dominik Stadler
Hi, the vulnerability was concerning the XML parsing of files in the newer Microsoft document formats (i.e. xlsx, docx, pptx, ...). These files are actually zip-files with a bunch of XML-files inside. There was a possibility to create a specially crafted xml-file as part of such a file POI could g