GLSA-200801-11 : CherryPy: Directory traversal vulnerability

This script is Copyright (C) 2008-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200801-11
(CherryPy: Directory traversal vulnerability)

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.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200801-11.xml

Solution :

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'

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 30116 (gentoo_GLSA-200801-11.nasl)

Bugtraq ID:

CVE ID: CVE-2008-0252