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Category:   Application (Generic)  >   PHP Vendors:   PHP Group
PHP dechunk Filter Signed Comparison Error Lets Remote Users Deny Service
SecurityTracker Alert ID:  1023937
SecurityTracker URL:
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  May 3 2010
Impact:   Denial of service via network
Exploit Included:  Yes  
Version(s): 5.3 - 5.3.2
Description:   A vulnerability was reported in PHP. A remote user can cause denial of service conditions.

A remote user can send a specially crafted HTTP stream to trigger an integer overflow in the chunk size decoder in the dechunk filter, resulting in a crash.

In a multithreaded webserver environment, memory corruption with code execution may be possible.

Stefan Esser reported this vulnerability.

The original advisory is available at:

Impact:   A remote user can cause the target PHP service to crash.
Solution:   No solution was available at the time of this entry.
Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.

 Source Message Contents

Date:  Mon, 03 May 2010 18:56:12 +0000
Subject:  PHP

MOPS-2010-003: PHP dechunk Filter Signed Comparison Vulnerability

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