Description
Buffer overflow in Winhlp32.exe allows remote attackers to execute arbitrary code via an HTML document that calls the HTML Help ActiveX control (HHCtrl.ocx) with a long pathname in the Item parameter.
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 Windows 95/98/2000/NT 4.0 - WinHlp Item Buffer Overflow EDB-21485 · remote · May 27, 2002 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 4857 vdb-entry
- 2991 vdb-entry
- htmlhelp-item-bo(9746) vdb-entry
- Q293338 vendor-advisory
- 20020801 Winhelp32 Remote Buffer Overrun mailing-list