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Files from John McDonald

First Active2000-02-11
Last Active2006-11-27
lackenv.txt
Posted Nov 27, 2006
Authored by John McDonald, Mark Dowd, Justin Schuh

A lack of environment sanitization in FreeBSD, OpenBSD, and NetBSD dynamic loaders may allow for privilege escalation.

tags | advisory
systems | netbsd, freebsd, openbsd
SHA-256 | 10d249a491bc27ea8ab76d147121933d548a8fe892768f2d033e4b40d075076c
blackhat-fw1.tgz
Posted Sep 1, 2000
Authored by Dug Song, John McDonald, Thomas Lopatic

A Stateful Inspection of FireWall-1 - In this advisory we summarize our findings from BlackHat 2000 on Checkpoint Firewall-1. It is susceptible to several trivial attacks against its inter-module authentication protocols, IP address verification has flaws, FWN1 and FWA1 is vulnerable to a replay attack, Fastmode vulnerabilities, FWZ Encapsulation vulnerabilities, and Stateful Inspection problems, and much more. Included in the tarball is the presentation in two formats, the technical documentation for the vulnerabilities, and the source code used in the demonstation.

tags | paper, vulnerability, protocol
SHA-256 | 2307e3b4992373126506a9e8ddec37a8bb211d7837d390f321905d5f799474dd
fw1-ftp.txt
Posted Feb 11, 2000
Authored by John McDonald

FireWall-1 FTP Server Vulnerability Background Paper #1 - The basic idea of the described attack is to subvert the security policy implemented by a stateful firewall. This is done by triggering the generation of a TCP packet that, when inspected by the firewall, will change the firewall's internal state such that an attacker is able to establish a TCP connection to a filtered port through the firewall. This packet is the server response to a PASV user request during a FTP session.

tags | exploit, tcp
SHA-256 | fcb6f48f31d6598b702db1e3ab3a2478a63a0a80c8c9de809337c6e185b65a4a
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