full-disclosure - [ GLSA 200710-10 ] SKK Tools: Insecure temporary file creation

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Date: Fri, 12 Oct 2007 22:44:16 +0200
From: Raphael Marichez <falco@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200710-10 ] SKK Tools: Insecure temporary
	file creation

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Gentoo Linux Security Advisory                           GLSA 200710-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: SKK Tools: Insecure temporary file creation
      Date: October 12, 2007
      Bugs: #193121
        ID: 200710-10

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Synopsis
========

SKK insecurely creates temporary files.

Background
==========

SKK is a Japanese input method for Emacs.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  app-i18n/skktools      < 1.2-r1                         >= 1.2-r1

Description
===========

skkdic-expr.c insecurely writes temporary files to a location in the
form $TMPDIR/skkdic$PID.{pag,dir,db}, where $PID is the process ID.

Impact
======

A local attacker could create symbolic links in the directory where the
temporary files are written, pointing to a valid file somewhere on the
filesystem that is writable by the user running the SKK software. When
SKK writes the temporary file, the target valid file would then be
overwritten with the contents of the SKK temporary file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All SKK Tools users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-i18n/skktools-1.2-r1"

References
==========

  [ 1 ] CVE-2007-3916
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3916

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200710-10.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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.

http://creativecommons.org/licenses/by-sa/2.5

Content of type "application/pgp-signature" skipped

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