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CVE-2012-3544 Chunked transfer encoding extension size is not limited

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.0 to 7.0.29
- - Tomcat 6.0.0 to 6.0.36

Description:
When processing a request submitted using the chunked transfer encoding,
Tomcat ignored but did not limit any extensions that were included. This
allows a client to perform a limited DOS by streaming an unlimited
amount of data to the server.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Tomcat 7.0.x users should upgrade to 7.0.30 or later
- - Tomcat 6.0.x users should upgrade to 6.0.37 or later

Credit:
This issue was identified by Steve Jones.

References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-6.html
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