Description
The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information Services (IIS) Web Server 5.0 only uses Windows NT ACL configuration, which allows remote attackers to bypass NTLM and basic authentication mechanisms and access private web directories via the CiWebhitsfile parameter to null.htw.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Microsoft IIS 5.1 - Hit Highlighting Authentication Bypass EDB-4016 · remote · May 31, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 41091 vdb-entry
- 2725 third-party-advisory
- 20070522 [ISecAuditors Security Advisories] Microsoft IIS5 NTLM and Basic authentication bypass mailing-list
- 24105 vdb-entry
- 328832 vendor-advisory