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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:
Mozilla Firefox Javascript Bugs Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016846
SecurityTracker URL:
CVE Reference:   CVE-2006-4253, CVE-2006-4565, CVE-2006-4566, CVE-2006-4571   (Links to External Site)
Date:  Sep 15 2006
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create specially crafted HTML that, when loaded by the target user, will trigger a buffer overflow or memory access error and execute arbitrary code on the target system. The code will run with the privileges of the target user.

A JavaScript regular expression that contains a minimal quantifier can trigger this flaw [CVE-2006-4565]. Priit Laes reported this vulnerability.

A regular expression that ends with a backslash inside of an unterminated character set (e.g. "[\\") can trigger an overflow [CVE-2006-4566]. CanadianGuy, Girts Folkmanis, and Catalin Patulea reported this vulnerability.

Timing-dependent Javascript cases can trigger this flaw [CVE-2006-4253]. Jonathan Watt and Michal Zalewski independently reported this vulnerability.

Various cases can trigger memory corruption, which may potentially lead to arbitrary code execution [CVE-2006-4571]. Bernd Mielke, Georgi Guninski, Igor Bukanov, Jesse Ruderman, Martijn Wargers, Mats Palmgren, Olli Pettay, shutdown, and Weston Carloss reported these vulnerabilities.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fixed version (

The Mozilla advisories are available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 15 2006 (Red Hat Issues Fix) Mozilla Firefox Javascript Bugs Let Remote Users Execute Arbitrary Code
Red Hat has released a fix for Red Hat Enterprise Linux 4.

 Source Message Contents

[Original Message Not Available for Viewing]

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