GLSA-200409-08 : Ruby: CGI::Session creates files insecurely

This script is Copyright (C) 2004-2014 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-200409-08
(Ruby: CGI::Session creates files insecurely)

The CGI::Session::FileStore implementation (and presumably
CGI::Session::PStore), which allow data associated with a particular
Session instance to be written to a file, writes to a file in /tmp with no
regard for secure permissions. As a result, the file is left with whatever
the default umask permissions are, which commonly would allow other local
users to read the data from that session file.

Impact :

Depending on the default umask, any data stored using these methods could
be read by other users on the system.

Workaround :

By changing the default umask on the system to not permit read access to
other users (e.g. 0700), one can prevent these files from being readable by
other users.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200409-08.xml

Solution :

All Ruby users should upgrade to the latest version:
# emerge sync
# emerge -pv '>=dev-lang/ruby-your_version'
# emerge '>=dev-lang/ruby-your_version'

Risk factor :

Low / CVSS Base Score : 2.1
(CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 14662 (gentoo_GLSA-200409-08.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0755