GEN:SID 1:2442
Message WEB-MISC Quicktime User-Agent buffer overflow attempt
Summary This event is generated when an attempt is made to exploit a known
vulnerability in Apple Quicktime/Darwin Streaming Server.
Impact Denial of Service (DoS).
Detailed Information The Apple Quicktime Streaming Server is used to serve client machines
with streaming media content using TCP/IP. A vulnerability exists in the
processing of client requests that can cause a DoS.

An overly long User-Agent field in DESCRIBE requests to the server can
cause this condition to occur.
Affected Systems Apple Darwin Streaming Server 4.1.3
    Apple Quicktime Streaming Server 4.1.3
Attack Scenarios An attacker can supply a user agent field in excess of 255 characters in
a DESCRIBE request to trigger the DoS condition.
Ease of Attack Moderate.
Corrective Action Apply the appropriate vendor supplied patches.

Upgrade to the latest non-affected version of the software.
Additional References  
Rule References bugtraq: 9735
cve: 2004-0169