bugtraq - [SECURITY] CVE-2013-2067 Session fixation with FORM authenticator

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Message-ID: <518CB1D4.1020106@apache.org>
Date: Fri, 10 May 2013 09:37:40 +0100
From: Mark Thomas <markt@...che.org>
To: Tomcat Users List <users@...cat.apache.org>
CC: Tomcat Developers List <dev@...cat.apache.org>,
  announce@...cat.apache.org, announce@...che.org,
  full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: [SECURITY] CVE-2013-2067 Session fixation with FORM authenticator

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CVE-2013-2067 Session fixation with FORM authenticator

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Tomcat 7.0.0 to 7.0.32
- - Tomcat 6.0.21 to 6.0.36

Description:
FORM authentication associates the most recent request requiring
authentication with the current session. By repeatedly sending a request
for an authenticated resource while the victim is completing the login
form, an attacker could inject a request that would be executed using
the victim's credentials. This attack has been prevented by changing the
session ID prior to displaying the login page as well as after the user
has successfully authenticated.


Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Tomcat 7.0.x users should upgrade to 7.0.33 or later
- - Tomcat 6.0.x users should upgrade to 6.0.37 or later

Credit:
This issue was identified by the Apache 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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