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TITLE:
Apache Tomcat JK Web Server Connector Long URL Buffer Overflow

SECUNIA ADVISORY ID:
SA24398

VERIFY ADVISORY:
http://secunia.com/advisories/24398/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Apache Tomcat 5.x
http://secunia.com/product/3571/
Apache Tomcat 4.x
http://secunia.com/product/328/
Apache Tomcat JK Web Server Connector 1.x
http://secunia.com/product/13598/

DESCRIPTION:
A vulnerability has been reported in Apache Tomcat JK Web Server
Connector, which can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to a boundary error within the
"map_uri_to_worker()" function in the mod_jk.so library. This can be
exploited to cause a stack-based buffer overflow via an overly long
(more than 4,095 bytes) URL request.

Successful exploitation allows execution of arbitrary code.

The vulnerability reportedly only affects versions 1.2.19 and 1.2.20.
Tomcat versions 5.5.20 and 4.1.34 are reportedly also affected as they
contain the vulnerable connector version in their source packages.

SOLUTION:
Update to version 1.2.21.

PROVIDED AND/OR DISCOVERED BY:
Discovered by an anonymous researcher and reported via ZDI.

ORIGINAL ADVISORY:
Apache Tomcat:
http://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html
http://tomcat.apache.org/security-jk.html

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-07-008.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
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clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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