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Files from Marek Kroemeke

First Active2009-10-08
Last Active2016-02-02
A Tale of openssl_seal(), PHP, and Apache2handle
Posted Feb 2, 2016
Authored by Filip Palian, Marek Kroemeke, Mateusz Kocielski

openssl_seal() is prone to use uninitialized memory that can be turned into a code execution. This document describes technical details of the journey to hijack apache2 requests. It is a very well written and thoroughly documented piece of research.

tags | exploit, paper, code execution
MD5 | 9c14b46a2de734fa08faee15ff5d7157
FreeBSD Security Advisory - IGMP Integer Overflow
Posted Apr 8, 2015
Authored by Marek Kroemeke, Mateusz Kocielski | Site security.freebsd.org

FreeBSD Security Advisory - An integer overflow in computing the size of IGMPv3 data buffer can result in a buffer which is too small for the requested operation. An attacker who can send specifically crafted IGMP packets could cause a denial of service situation by causing the kernel to crash. Revision 2 of this advisory.

tags | advisory, denial of service, overflow, kernel
systems | freebsd
advisories | CVE-2015-1414
MD5 | e3aa8e64324f5ee800e00f8517bd7c03
Varnish Cache 4.03 Buffer Overflow
Posted Mar 10, 2015
Authored by Filip Palian, Marek Kroemeke, Akat1

Varnish Cache version 4.0.3 suffers from a buffer overflow vulnerability.

tags | exploit, overflow
MD5 | a6bf0dcb9a016c94f4ef460645eb0ccc
FreeBSD Security Advisory - IGMP Integer Overflow
Posted Feb 26, 2015
Authored by Marek Kroemeke, Mateusz Kocielski | Site security.freebsd.org

FreeBSD Security Advisory - An integer overflow in computing the size of IGMPv3 data buffer can result in a buffer which is too small for the requested operation. An attacker who can send specifically crafted IGMP packets could cause a denial of service situation by causing the kernel to crash.

tags | advisory, denial of service, overflow, kernel
systems | freebsd
advisories | CVE-2015-1414
MD5 | 89b443fe13922317739f20717496c68e
Apache 2.4.x mod_proxy Denial Of Service
Posted Jul 22, 2014
Authored by Marek Kroemeke, AKAT-1, 22733db72ab3ed94b5f8a1ffcde850251fe6f466

Apache versions 2.4.x prior to 2.4.10 suffer from a denial of service condition when mod_proxy is in use.

tags | exploit, denial of service
advisories | CVE-2014-0117
MD5 | 8aebf78a323b896068a67bfc89f7a4a1
PHP Socket connect() Stack Buffer Overflow
Posted May 25, 2011
Authored by Filip Palian, Marek Kroemeke, Mateusz Kocielski

PHP socket connect() stack buffer overflow proof of concept code.

tags | exploit, overflow, php, proof of concept
advisories | CVE-2011-1938
MD5 | fddfcef57c1ae3d3317eb501f29dab53
Riorey RIOS Hardocded Password
Posted Oct 8, 2009
Authored by Marek Kroemeke

Riorey DDoS mitigation appliances suffer from a very poor design vulnerability where they have a hardcoded root login and password for automation. Fail!

tags | exploit, root
MD5 | e5537fe045b3a9e6407e302e8380e079
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