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TITLE:
CherryPy Session Id Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA28354

VERIFY ADVISORY:
http://secunia.com/advisories/28354/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
CherryPy 2.x
http://secunia.com/product/8195/
CherryPy 3.x
http://secunia.com/product/17087/

DESCRIPTION:
A vulnerability has been reported in CherryPy, which can be exploited
by malicious people to bypass certain security settings.

The vulnerability is caused due to the improper handling of cookies
when using file-based sessions. This can be exploited to access files
outside the session directory by using directory traversal attacks via
the session id.

The vulnerability is reported in version 2.2.1 and 3.0.2. Other
versions may also be affected.

SOLUTION:
Fixed in development version 3.1b1 and in the SVN repository.
http://www.cherrypy.org/changeset/1775
http://www.cherrypy.org/changeset/1774

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.cherrypy.org/ticket/744

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About:
This Advisory was delivered by Secunia as a free service to help
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http://secunia.com/about_secunia_advisories/


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