-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200409-08
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: Ruby: CGI::Session creates files insecurely
      Date: September 03, 2004
      Bugs: #60525
        ID: 200409-08

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=======
When used for CGI scripting, Ruby creates session files in /tmp with
the permissions of the default umask. Depending on that umask, local
users may be able to read sensitive data stored in session files.

Background
=========
Ruby is an Object Oriented, interpreted scripting language used for
many system scripting tasks. It can also be used for CGI web
applications.

Affected packages
================
    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  dev-lang/ruby     < 1.8.2_pre2                      *>= 1.6.8-r11
                                                          *>= 1.8.0-r7
                                                         >= 1.8.2_pre2

Description
==========
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.

Resolution
=========
All Ruby users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=dev-lang/ruby-your_version"
    # emerge ">=dev-lang/ruby-your_version"

References
=========
  [ 1 ] CAN-2004-0755
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0755

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/200409-08

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/.

License
======
Copyright 2004 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.

https://creativecommons.org/licenses/by-sa/1.0/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFBOMMqzKC5hMHO6rkRAqmnAJ9LMGqjEBpUTQAXLNIFIDEH6TTR+ACfUCAh
LjX87bbkNFchTqau42NZ4wo=xWAL
-----END PGP SIGNATURE-----