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Files from Mateusz Jurczyk

First Active2012-07-16
Last Active2020-10-30
Microsoft Windows Kernel cng.sys Buffer Overflow
Posted Oct 30, 2020
Authored by Mateusz Jurczyk, Google Security Research, hawkes

The Microsoft Windows Kernel Cryptography Driver (cng.sys) exposes a \Device\CNG device to user-mode programs and supports a variety of IOCTLs with non-trivial input structures. It constitutes a locally accessible attack surface that can be exploited for privilege escalation (such as sandbox escape).

tags | exploit, kernel
systems | windows
advisories | CVE-2020-17087
MD5 | 6e04f989132d4f0fcd1f22d984a8aedf
MS15-078 Microsoft Windows Font Driver Buffer Overflow
Posted Sep 17, 2015
Authored by juan vazquez, Mateusz Jurczyk, Cedric Halbronn, Eugene Ching | Site metasploit.com

This Metasploit module exploits a pool based buffer overflow in the atmfd.dll driver when parsing a malformed font. The vulnerability was exploited by the hacking team and disclosed on the july data leak. This Metasploit module has been tested successfully on vulnerable builds of Windows 8.1 x64.

tags | exploit, overflow
systems | windows
advisories | CVE-2015-2426, CVE-2015-2433
MD5 | a7ff9bf552596c6dfd147beac70ba192
Libexif 0.6.20 Overflows / Denial Of Service
Posted Jul 16, 2012
Authored by Yunho Kim, Dan Fandrich, Mateusz Jurczyk

A large amount of heap and buffer overflows along with denial of service conditions have been addressed in libexif. Versions 0.6.20 and below are affected.

tags | advisory, denial of service, overflow
advisories | CVE-2012-2812, CVE-2012-2813, CVE-2012-2814, CVE-2012-2836, CVE-2012-2837, CVE-2012-2840, CVE-2012-2841, CVE-2012-2845
MD5 | 3d0be53cad6dcb0d57eb5cd82c6f485d
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