Adobe Macromedia JRun ISAPI long host header request buffer overflow

jrun-isapi-host-bo (9194) The risk level is classified as HighHigh Risk


Macromedia JRun (formerly Allaire JRun) is vulnerable to a buffer overflow in the handling of malformed ISAPI DLL requests. By sending a request for an ISAPI DLL with an overly long Host header field, a remote attacker could overflow a buffer and execute arbitrary code on the system with SYSTEM privileges or cause the system to crash.


Gain Access


Apply the appropriate patch for your system, as listed in Macromedia Security Bulletin MPSB02-02. See References.

— OR —

Upgrade to the latest version of JRun (4.0 or later), available from the Macromedia Web site. See References.


Platforms Affected:

  • Macromedia JRun 3.0
  • Macromedia JRun 3.1


May 29, 2002

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