TippingPoint Zero Day Initiative

Apache Tomcat JK Web Server Connector Long URL Stack Overflow Vulnerability

ZDI-07-008: March 2nd, 2007


Affected Vendors


Affected Products


TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5152. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apache Tomcat JK Web Server Connector. Authentication is not required to exploit this vulnerability.

The specific flaw exists in the URI handler for the mod_jk.so library, map_uri_to_worker(), defined in native/common/jk_uri_worker_map.c. When parsing a long URL request, the URI worker map routine performs an unsafe memory copy. This results in a stack overflow condition which can be leveraged to execute arbitrary code.

Vendor Response

Apache has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2007-02-16 - Vulnerability reported to vendor
    2007-03-02 - Coordinated public release of advisory


This vulnerability was discovered by: