full-disclosure - CVE-2012-4431 Apache Tomcat Bypass of CSRF prevention filter

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Date: Tue, 04 Dec 2012 19:47:59 +0000
From: Mark Thomas <markt@...che.org>
To: Tomcat Users List <users@...cat.apache.org>
Cc: Tomcat Developers List <dev@...cat.apache.org>,
	full-disclosure@...ts.grok.org.uk,
	Tomcat Announce List <announce@...cat.apache.org>,
	bugtraq@...urityfocus.com, announce@...che.org
Subject: CVE-2012-4431 Apache Tomcat Bypass of CSRF
	prevention filter

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Hash: SHA1

CVE-2012-4431 Apache Tomcat Bypass of CSRF prevention filter

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.0 to 7.0.31
- - Tomcat 6.0.0 to 6.0.35

Description:
The CSRF prevention filter could be bypassed if a request was made to a
protected resource without a session identifier present in the request.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Tomcat 7.0.x users should upgrade to 7.0.32 or later
- - Tomcat 6.0.x users should upgrade to 6.0.36 or later

Credit:
This issue was identified by The Tomcat security team

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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