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Date: Mon, 13 Aug 2007 23:28:21 -0400
From: Mark Thomas <markt@...che.org>
To: Tomcat Users List <users@...cat.apache.org>,
	Tomcat Developers List <dev@...cat.apache.org>,
	full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Cc: "CERT(R) Coordination Center" <cert@...t.org>
Subject: CVE-2007-3382: Handling of cookies containing a ' character

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CVE-2007-3382: Handling of cookies containing a ' character

Severity:
Low (Session Hi-jacking)

Vendor:
The Apache Software Foundation

Versions Affected:
6.0.0 to 6.0.13
5.5.0 to 5.5.24
5.0.0 to 5.0.30
4.1.0 to 4.1.36
3.3 to 3.3.2

Description:
Tomcat incorrectly treats a single quote character (') in a cookie
value as a delimiter. In some circumstances this can lead to the
leaking of information such as session ID to an attacker.

Mitigation:
Upgrade to 6.0.14

Credit:
This issue was discovered by Tomasz Kuczynski, Poznan Supercomputing
and Networking Center, who worked with the CERT/CC to report the
vulnerability.

Example:
http://localost:8080/servlets-examples/servlet/CookieExample?cookiename=BLOCKER&cookievalue=%5C%22A%3D%27%3B+Expires%3DThu%2C+1+Jan+2009+00%3A00%3A01+UTC%3B+Path%3D%2Fservlets-examples%2Fservlet+%3B

References:
http://tomcat.apache.org/security.html

Mark Thomas


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