Title: Microsoft Windows File Protection Signed File Replacement Vulnerability
Severity: MODERATE
Description:
Microsoft Windows ships with a component to verify digital signatures that have been applied to system files and third-party code called 'Windows File Protection' (WFP). A vulnerability in Windows File Protection has been reported that may result in the re-introduction of vulnerable files after fixes/patches have replaced them.
According to the report, Security Catalogs containing the hashes of old files are kept in %WinDir%\System32\CatRoot after patches/fixes which replace them have been deployed. If these patched files are somehow overwritten with the vulnerable old files, Windows File Protection will not detect the old files as being invalid due to the existent catalog containing their hash.
This may allow for attackers to re-introduce onto a system and then exploit vulnerable executables/files.
Affected Products:
- Avaya DefinityOne Media Servers
- Avaya IP600 Media Servers
- Avaya S3400 Message Application Server
- Avaya S8100 Media Servers
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP3
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Datacenter Server SP3
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP3
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Server Japanese Edition
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP3
- Microsoft Windows XP 64-bit Edition
- Microsoft Windows XP 64-bit Edition SP1
- Microsoft Windows XP Home
- Microsoft Windows XP Home SP1
- Microsoft Windows XP Professional
- Microsoft Windows XP Professional SP1
References:
- Microsoft: Q310791 Description of the Software Restriction Policies in Windows XP
- Microsoft: Q324036 HOW TO: Use Software Restriction Policies in the Windows .NET Server
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