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Files from Vladislav Mladenov

Email addressvladislav.mladenov at rub.de
First Active2014-01-16
Last Active2019-10-01
Practical Decryption exFiltration: Breaking PDF Encryption
Posted Oct 1, 2019
Authored by Christian Mainka, Vladislav Mladenov, Jens Mueller, Jorg Schwenk, Sebastian Schinzel, Fabian Ising

The Portable Document Format, better known as PDF, is one of the most widely used document formats worldwide, and in order to ensure information confidentiality, this file format supports document encryption. In this paper, the authors analyze PDF encryption and show two novel techniques for breaking the confidentiality of encrypted documents.

tags | paper
MD5 | 07a85b3d5850b0d07bc74cd4e5fcc956
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
Drupal 6.x / 7.x Impersonation / Access Bypass / Hardening
Posted Jan 16, 2014
Authored by David Rothstein, Damien Tournoud, Christian Mainka, Matt Vance, Vladislav Mladenov | Site drupal.org

Drupal core versions 6.x and 7.x suffer from impersonation, access bypass, and security hardening vulnerabilities.

tags | advisory, vulnerability
MD5 | 03a3de5308fdaffa7f351ff78bd4bda2
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