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CVE-2012-2733 Apache Tomcat Denial of Service

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.0 to 7.0.27
- - Tomcat 6.0.0 to 6.0.35

Description:
The checks that limited the permitted size of request headers were
implemented too late in the request parsing process for the HTTP NIO
connector. This enabled a malicious user to trigger an
OutOfMemoryError by sending a single request with very large headers.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Tomcat 7.0.x users should upgrade to 7.0.28 or later
- - Tomcat 6.0.x users should upgrade to 6.0.36 or later

Credit:
This issue was identified by Josh Spiewak.

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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