Software Engineering Institute

Scalable Vector Graphics (SVG) is an XML markup language for describing and displaying animated or static vector graphics. Mozilla Firefox includes a native SVG viewer, other Mozilla projects may use the Adobe SVG viewer.

The Mozilla SVG viewer fails to properly validate size parameters supplied to a memory allocation routine allowing an integer overflow to occur. This vulnerability could cause an undersized buffer to be allocated. When data is copied to that buffer, a heap-based buffer overflow may occur. An attacker may be able to exploit this vulnerability by convincing a user to go to a website that hosts a specially crafted SVG file.

This vulnerability occurred as a result of failing to comply with rule INT30-C of the CERT C Programming Language Secure Coding Standard.

A remote, unauthenticated attacker may be able to execute arbitrary code, or create a denial-of-service condition.

Upgrade
See Mozilla Foundation Security Advisory 2007-01 for information about affected clients.

Disable SVG

Until updates can be applied, disabling SVG in Mozilla Firefox may mitigate this vulnerability. See the Mozilla about:config guide for information on how to disable SVG.