Security

IT Security

Articles and presentations about IT Security

Here is a list of all articles and presentations I've published about IT Security so far.

File Formats Security Issues

This is a series of articles about file formats and related security issues. In 2003 I had presented an article in French about this subject at the SSTIC conference: [SSTIC03]. In the following articles I will provide an updated version in English with more information about common file formats.

CherryProxy - a filtering HTTP proxy extensible in Python

CherryProxy is a simple HTTP proxy written in Python 2.x, based on the CherryPy WSGI server and httplib, extensible for content analysis and filtering.

PDF Security Issues

This article describes the PDF file format, related security issues and useful resources. [WORK IN PROGRESS]

Portable ExeFilter

If you want to test or use ExeFilter on Windows but you cannot or you do not want to install a Python interpreter, Portable ExeFilter is a simple solution. You just need to unzip it in any folder on a hard drive or a USB stick and it should run anywhere.

ExeFilter - an open-source tool and framework to filter files and active content

ExeFilter is an open-source tool and python framework to filter file formats in e-mails, web pages or files. It detects many common file formats and can remove active content (scripts, macros, etc) according to a configurable policy.

CanSecWest08 - ExeFilter

This is a presentation at the CanSecWest08 conference about ExeFilter, an open-source tool and framework to filter files and active content.

EUSecWest 2010 - Fighting PDF malware with ExeFilter

This is a presentation given at the EUSecWest 2010 conference in Amsterdam on the 16 June about recent PDF vulnerabilities and malware, showing how a tool such as ExeFilter may be used to provide additional protection as a complement to antivirus engines.

Origapy - a Python module to sanitize PDF files

Origapy is a Python interface to Origami, a PDF parser written in Ruby. It provides access to pdfclean.rb, in order to sanitize PDF files by disabling all active content (javascript, launch actions, embedded files, etc). Because Origami is a full PDF parser, it is much more effective than PDFiD (when sanitizing/disarming PDF files), but also quite slower.

PDFiD - a Python module to analyze and sanitize PDF files

PDF files may be used to trigger malicious content, as described here. PDFiD is a Python tool to analyze and sanitize PDF files, written by Didier Stevens. Here is PDFiD_PL, a version that I have slightly modified so that it can be imported as a module in Python applications (originally for ExeFilter).

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