Home / mailings [gentoo-announce] [ GLSA 200801-11 ] CherryPy: Directory traversal
Posted on 27 January 2008
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Gentoo Linux Security Advisory GLSA 200801-11
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http://security.gentoo.org/
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Severity: Normal
Title: CherryPy: Directory traversal vulnerability
Date: January 27, 2008
Bugs: #204829
ID: 200801-11
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Synopsis
========
CherryPy is vulnerable to a directory traversal that could allow
attackers to read and write arbitrary files.
Background
==========
CherryPy is a Python-based, object-oriented web development framework.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-python/cherrypy < 3.0.2-r1 *>= 2.2.1-r2
>= 3.0.2-r1
Description
===========
CherryPy does not sanitize the session id, provided as a cookie value,
in the FileSession._get_file_path() function before using it as part of
the file name.
Impact
======
A remote attacker could exploit this vulnerability to read and possibly
write arbitrary files on the web server, or to hijack valid sessions,
by providing a specially crafted session id. This only affects
applications using file-based sessions.
Workaround
==========
Disable the "FileSession" functionality by using "PostgresqlSession" or
"RamSession" session management in your CherryPy application.
Resolution
==========
All CherryPy 2.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-python/cherrypy-2.2.1-r2"
All CherryPy 3.0 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-python/cherrypy-3.0.2-r1"
References
==========
[ 1 ] CVE-2008-0252
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0252
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200801-11.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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