000023732 - ISAPI filter for ClearTrust Agent 4.6 (IIS) throws an exception out of w3wp.exe in faulting module msvcrt.dll when the exported headers exceed (approximately) 2048 bytes of data.

Document created by RSA Customer Support Employee on Jun 16, 2016Last modified by RSA Customer Support Employee on Apr 21, 2017
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Article Number000023732
Applies To
RSA ClearTrust Agent 4.6 for IIS 6.0

RSA ClearTrust Agent 4.6 for IIS 5.0
Windows 2003 Server SP1
IssueISAPI filter for ClearTrust Agent 4.6 (IIS) throws an exception out of w3wp.exe in faulting module msvcrt.dll when the exported headers exceed (approximately) 2048 bytes of data. 
ISAPI filter for ClearTrust Agent 4.6 (IIS) throws an exception and exits.  The application error occurs in program w3wp.exe in faulting module msvcrt.dll when the exported HTTP headers exceed (approximately) 2048 bytes of data.
In the Microsoft console logs, an application error occurs :  "Faulting application w3wp.exe, version 6.0.3790.1830, faulting module msvcrt.dll, version 7.0.3790.1830, fault address 0x00038548"
This error may occur when the application exports attributes from LDAP which results in the exported http headers exceeding approximately 2600 bytes.
RSA ISAPI filter throws an exception and exits.   This results in a lost session.  Consequently, the web application will not be able to maintain a web session when moving from page to page and this would also result in the application to behave as if the session had timed out.  It then redirects the user back to the security module.
CauseOn the crashing thread, the exception is caused by the : ct_iis60_agent!HttpFilterProc function call arising out of the ct_iis60_agent ISAPI Filter.  
ResolutionApply IIS 6.0 ClearTrust Agent 4.6 hotfix 4.6.0.132 or later. Contact technical support to request this fix or the latest hotfix.
Legacy Article IDa36219

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