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Firefox IDN URL Domain Name Buffer Overflow
Secunia Advisory: SA16764
Release Date: 2005-09-09
Last Update: 2005-09-23
Popularity: 65,284 views

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:Mozilla Firefox 1.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Tom Ferris has discovered a vulnerability in Firefox, which can be exploited by malicious people to cause a DoS (Denial of Service) or to compromise a user's system.

The vulnerability is caused due to an error in the handling of an IDN URLs that contains the 0xAD character in its domain name. This can be exploited to cause a heap-based buffer overflow.

Successful exploitation crashes Firefox and allows code execution but requires that the user is tricked into visiting a malicious web site or open a specially crafted HTML file.

NOTE: Exploit code is publicly available.

The vulnerability has been confirmed in version 1.0.6, and is reported to affect versions prior to 1.0.6, and version 1.5 Beta 1.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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