Buffer overflow in the WriteToLog function for JRun 3.0 through 4.0 web server connectors, such as (1) mod_jrun and (2) mod_jrun20 for Apache, with verbose logging enabled, allows remote attackers to execute arbitrary code via a long HTTP header Content-Type field or other fields.
iDEFENSE Security Advisory 09.29.04 - Remote exploitation of a buffer overflow vulnerability in Macromedia's JRun 4 mod_jrun Apache module could allow execution of arbitrary code.