iPlanet: Web Server 4.x Product Alert
Specific malformed HTTP headers can introduce the risk of data compromise due to a "Response Header Overflow" vulnerability in the iPlanet 4.x Web Server. This is not a Macromedia problem, but Macromedia's security staff recommends customers check out the upgrade and workaround available.
Customer Security Bulletin (CSB01-04): iPlanet: Web Server 4.x Product Alert