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GMM

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GMM

http://www.xmailserver.org/gmm.html
The Guarded Memory Move tool is useful for studying buffer overflows and catching them together with a "good" stack image. Once a stack overflow has been exploited, the back trace is already gone, as is information about parameters and local variables that are very important in understanding how the attacker is working out the exploit. The GMM library uses dynamic function call interception to catch the most common functions that attackers use to exploit stack buffers. It uses the LD_PRELOAD capability and offers two services: first, it avoids buffer overflow to allow the attacker to execute shell-code on your machine. Second, where an exploit is detected, it saves the stack content and triggers a segmentation fault. The resulting core dump has the necessary information to debug the exploit and fix the software.

Documentation

User reference in PDF from http://www.xmailserver.org/gmm.pdf


Download

Download External-link-icon.png version 0.4 (beta)
released on 27 January 2004

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Licensing

LicenseVerified byVerified onNotes
GPLv2orlaterJanet Casey27 January 2004



Leaders and contributors

Contact(s)Role
"Email davidel@xmailserver.org" Davide Libenzi Maintainer


Resources and communication

Software prerequisites

Kind Description
Required to use glibc
Required to build gcc

This entry (in part or in whole) was last reviewed on 2 February 2004.



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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.


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