Title: Microsoft IIS And PWS 8.3 Directory Name Vulnerability
Severity: HIGH
Description:
32bit Windows operating systems support long filenames, but also offer a means of compatibility with the older 8.3 filenames required by previous versions of DOS and Windows. This leads to problems with programs that have their own internal file security mechanisms. In Microsoft's IIS and PWS, requesting the 8.3 version of a file or directory effectively bypasses the security attributes that are referenced to the full, long version of the filename, with permissions being based instead on those of the parent directory.
Successful exploitation of this vulnerability could lead not only to unauthorized directory listings, disclosure of arbitrary files, but also to the remote execution of 'protected' scripts.
For example: with directory listing enabled for C:\inetpub\wwwroot\ and listing disabled for c:\inetpub\wwwroot\longsubdir\, a GET request for http://server/longsubdir/ will result in a permission denied error, as it should. However, a GET request for http://server/longsu~1/ will result in a successful directory listing.
Affected Products:
- Cisco Building Broadband Service Manager 5.0.0
- Cisco Call Manager 1.0.0
- Cisco Call Manager 2.0.0
- Cisco Call Manager 3.0.0
- Cisco ICS 7750 0.0.0
- Cisco IP/VC 3540 Video Rate Matching Module 0.0.0
- Cisco Unity Server 2.0.0
- Cisco Unity Server 2.2.0
- Cisco Unity Server 2.3.0
- Cisco Unity Server 2.4.0
- Cisco uOne 1.0.0
- Cisco uOne 2.0.0
- Cisco uOne 3.0.0
- Cisco uOne 4.0.0
- Microsoft BackOffice 4.0.0
- Microsoft BackOffice 4.5.0
- Microsoft IIS 4.0.0
- Microsoft NT Option Pack for NT 4.0 0.0.0
- Microsoft Personal Web Server 4.0.0
- Microsoft Windows 98
- Microsoft Windows NT 4.0 Option Pack
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