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[SECURITY] CVE-2014-0075 Apache Tomcat denial of service
From: Mark Thomas <markt () apache org>
Date: Tue, 27 May 2014 13:46:16 +0100

CVE-2014-0075 Denial of Service

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- Apache Tomcat 8.0.0-RC1 to 8.0.3
- Apache Tomcat 7.0.0 to 7.0.52
- Apache Tomcat 6.0.0 to 6.0.39

Description:
It was possible to craft a malformed chunk size as part of a chucked
request that enabled an unlimited amount of data to be streamed to the
server, bypassing the various size limits enforced on a request. This
enabled a denial of service attack.

Mitigation:
Users of affected versions should apply one of the following mitigations
- Upgrade to Apache Tomcat 8.0.5 or later
  (8.0.4 contains the fix but was not released)
- Upgrade to Apache Tomcat 7.0.53 or later
- Upgrade to Apache Tomcat 6.0.41 or later
  (6.0.40 contains the fix but was not released)

Credit:
This issue was reported to the Tomcat security team by David Jorm of the
Red Hat Security Response Team.

References:
[1] http://tomcat.apache.org/security-8.html
[2] http://tomcat.apache.org/security-7.html
[3] http://tomcat.apache.org/security-6.html


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