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

Low Nessus Plugin ID 14662


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


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.


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

See Also

Plugin Details

Severity: Low

ID: 14662

File Name: gentoo_GLSA-200409-08.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2004/09/04

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:ruby, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2004/09/03

Reference Information

CVE: CVE-2004-0755

GLSA: 200409-08