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Bug #29356 Trailing URL Information Crashes Application Pool Using FastCGI
Submitted: 2004-07-23 19:20 UTC Modified: 2005-02-11 01:00 UTC
Avg. Score:4.6 ± 0.7
Reproduced:21 of 21 (100.0%)
Same Version:12 (57.1%)
Same OS:19 (90.5%)
From: kyle at flaretech dot biz Assigned:
Status: No Feedback Package: CGI/CLI related
PHP Version: 4.3.8 OS: Windows Server 2003
Private report: No CVE-ID: None
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 [2004-07-23 19:20 UTC] kyle at flaretech dot biz
I'm using IIS 6, PHP 4.3.8, and the latest ISAPI FastCGI binary from  It seems that it's possible to soft-crash the application pool serving a website by requesting a URL to a PHP file followed by /somefile.ext.

Reproduce code:
Access any existing php file using url

Expected result:
PHP should return "No input file specified."

Actual result:
Application pool crashes and recycles. If rapid fail protection is enabled and the url is accessed several times consecutively, the application pool will shutdown after reaching the maximum amount of errors.

Output from c:\windows\system32\logfiles\httperr

2004-07-22 16:30:32 1603 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Abandoned_By_AppPool 
2004-07-22 16:30:33 1604 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Abandoned_By_AppPool 
2004-07-22 16:30:36 1609 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Abandoned_By_AppPool 
2004-07-22 16:30:38 1611 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Abandoned_By_AppPool 
2004-07-22 16:30:38 1610 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Dropped 
2004-07-22 16:30:40 1613 80 HTTP/1.1 GET /index.php/test.htm - 7847 Connection_Abandoned_By_AppPool 
2004-07-22 16:30:40 1614 80 HTTP/1.1 GET /index.php/test.htm 503 7847 AppOffline

The following error appears in event log:

Event Type:	Warning
Event Source:	W3SVC
Event Category:	None
Event ID:	1009
Date:		7/23/2004
Time:		11:48:46 AM
User:		N/A
Computer:	SRV01
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '4876'. The process exit code was '0x80'.


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 [2005-02-11 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
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