GLSA 200801-11: CherryPy: Directory traversal vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	CherryPy: Directory traversal vulnerability
Date:	01/27/2008
Bugs:	#204829
ID:	200801-11

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	Architecture(s)
dev-python/cherrypy	< 3.0.2-r1	>= 2.2.1-r2	All supported architectures

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

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 https://bugs.gentoo.org.