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Home » Hacking News » Microsoft shlwapi.dll denial of service

Microsoft shlwapi.dll denial of service

by Mario Miri on May 13th, 2003 It has been reported that shlwapi.dll causes the calling process to crash when attempting to process some malformed HTML tags. It has been explained that this is due to string comparison when one of the strings is the NULL pointer.


Vulnerable:
Microsoft FrontPage 97
Microsoft FrontPage 98
Microsoft FrontPage 2002
Microsoft FrontPage 2002 SP1
Microsoft Internet Explorer 5.0
Microsoft Internet Explorer 5.0.1 SP3
Microsoft Internet Explorer 5.0.1 SP2
Microsoft Internet Explorer 5.0.1 SP1
Microsoft Internet Explorer 5.0.1
Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 5.5 SP1
Microsoft Internet Explorer 5.5 SP2
Microsoft Internet Explorer 6.0
Microsoft Internet Explorer 6.0 SP1
Microsoft Windows 2000 Advanced Server SP3
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server SP3
Microsoft Windows 2000 Datacenter Server SP2
Microsoft Windows 2000 Datacenter Server SP1
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional SP3
Microsoft Windows 2000 Professional SP2
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server
Microsoft Windows ME
Microsoft Windows XP Home SP1
Microsoft Windows XP Home
Microsoft Windows XP Professional SP1
Microsoft Windows XP Professional


Exploit / Proof Of Concept:
http://download.xatrix.org/prf/shlwapi-dll-form.txt


Solution:
Currently there are no vendor supplied patches.
A workaround for explorer.exe is to set Use Windows classic folders in Windows Explorer->Tools->Folder Options.


Discovered by:
Ramon Pinuaga Cascales, [email protected]


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