Other nomination

Backdooring Images

pdp

pdp on making image files execute script: IE's content sniffing runs HTML appended after a GIF89 header, and .jpg or .gif files whose bodies are HTML execute on view, so an avatar or a linked image on a forum can take the viewer's session. On Firefox an .htaccess line AddType text/html .jpg reproduces it. He argues the fix belongs server-side.

Record

Researcher

pdp

In the archive

• Nominated for the 2006 Top 10 Web Hacking Techniques

Tags

• file-upload
• mime
• content-type
• xss
• filter-bypass
• info-leak
• owasp-a03-2021
• owasp-a05-2021

This page is the archive's own catalogue record. The research is the work of pdp, first published at the original source. Preserved copies are kept so the citation survives its host.