ZDI-07-008: Apache Tomcat JK Web Server Connector Long URL Stack Overflow Vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2007-03-02T00:00:00


ZDI-07-008: Apache Tomcat JK Web Server Connector Long URL Stack Overflow Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-07-008.html March 2, 2007

-- CVE ID: CVE-2007-0774

-- Affected Vendor: Apache

-- Affected Products: Tomcat JK Web Server Connector 1.2.19 Tomcat JK Web Server Connector 1.2.20 Tomcat 4.1.34 Tomcat 5.5.20

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since February 26, 2007 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 2007.02.26 - Digital Vaccine released to TippingPoint customers 2007.03.02 - Coordinated public release of advisory

-- Credit: This vulnerability was discovered by an anonymous researcher.

-- About the Zero Day Initiative (ZDI): Established by TippingPoint, a division of 3Com, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at:


The ZDI is unique in how the acquired vulnerability information is used. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.