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Safari "data:" URI Handler Denial of Service Weakness
Secunia Advisory: SA16875
Release Date: 2005-09-20
Last Update: 2006-01-18
Popularity: 7,484 views

Critical:
Not critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:Safari 2.x

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CVE reference:CVE-2005-3018


Description:
Jonathan Rockway has discovered a weakness in Safari, which can be exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to an error in the processing of URLs in the "data:" URI handler. This can be exploited to crash a vulnerable browser via e.g. an image tag referencing a specially crafted "data:" URL.

Example:
data://<h1>crash</h1>

The weakness has been confirmed in version 2.0 (412.2). Other versions may also be affected.

Solution:
The weakness has been silently fixed in some security update.

Provided and/or discovered by:
Jonathan Rockway

Changelog:
2005-09-23: Added CVE reference.
2006-01-18: Updated "Solution" section.


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