Apple Personal Web Sharing is a utility that allows users to extend file-sharing abilities across a small intranet. It is shipped with MacOS 9.
A user may craft a URL which contains excess characters to cause the file-sharing system to shut down.
The file sharing system must then be restarted to regain its functionality once again.
http://fileserver/?aaaaaaaaa... [approx. 6000 characters]
Mac OS 9 Personal Web Sharing Long HTTP Request Parsing Remote DoS
Remote / Network Access
Denial of Service
Loss of Availability
Personal Web Sharing in Mac OS 9 contains a flaw that may allow a remote denial of service. The issue is triggered when sending an overly long HTTP request containing 6,000 bytes or more, and will result in loss of availability for the service.
Currently, there are no known upgrades, patches, or workarounds available to correct this issue.