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Files from Jorg Schwenk

First Active2019-02-26
Last Active2019-08-16
Open-Xchange OX Guard Cross Site Scripting / Signature Validation
Posted Aug 16, 2019
Authored by Hanno Boeck, Juraj Somorovsky, Martin Heiland, Jorg Schwenk, Sebastian Schinzel, Damian Poddebniak, Jens Muller, Marcus Brinkmann

Open-Xchange OX Guard versions 7.10.2 and below suffer from a cross site scripting vulnerability. Open-Xchange OX Guard versions 7.10.1 and below, 2.10.2 and below suffer from a signature validation vulnerability.

tags | exploit, xss
advisories | CVE-2018-9997, CVE-2019-11521
MD5 | 8a4509aba45a3f48bf32078dfdbc3fd1
Johnny You Are Fired
Posted May 1, 2019
Authored by Juraj Somorovsky, Jorg Schwenk, Sebastian Schinzel, Damian Poddebniak, Hanno Bock, Jens Muller, Marcus Brinkmann

This archive contains proof of concepts and a whitepaper that describes multiple email client implementations where popular clients for email are vulnerable to signature spoofing attacks.

tags | exploit, paper, spoof, proof of concept
advisories | CVE-2017-17848, CVE-2018-12019, CVE-2018-12020, CVE-2018-12356, CVE-2018-12556, CVE-2018-15586, CVE-2018-15587, CVE-2018-15588, CVE-2018-18509, CVE-2019-8338
MD5 | d247e4ccd9f597d40309c5f5e797a348
PDF Viewer Signatures Broken
Posted Feb 26, 2019
Authored by Christian Mainka, Vladislav Mladenov, Jorg Schwenk, Karsten Meyer zu Sel-hausen, Martin Grothe | Site nds.ruhr-uni-bochum.de

Researchers from Ruhr-University Bochum in Germany have broken digital signatures on PDFs and managed to create fake signatures on 21 of 22 viewer apps and five out of the seven online PDF digital signing services. This archive contains both whitepapers produced by the university.

tags | exploit, paper
MD5 | fe2c0d914302043ea609a1f2e70944c5
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