Microsoft IIS Server Tampering Vulnerability

A tampering vulnerability exists when Microsoft IIS Server improperly handles malformed request headers. An attacker who successfully exploited the vulnerability could cause a vulnerable server to improperly process HTTP headers and tamper with the responses returned to clients.

To exploit the vulnerability, an attacker would need to send a malformed HTTP request to an affected server.

The update addresses the vulnerability by modifying how IIS Server handles malformed request headers.