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Gentoo Linux Security Advisory GLSA 200501-38
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http://security.gentoo.org/
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Severity: Normal
Title: Perl: rmtree and DBI tmpfile vulnerabilities
Date: January 26, 2005
Bugs: #78634, #75696
ID: 200501-38
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Synopsis
========
The Perl DBI library and File::Path::rmtree function are vulnerable to
symlink attacks.
Background
==========
Perl is a cross platform programming language. The DBI is the standard
database interface module for Perl.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-perl/dbi <= 1.38 *>= 1.37-r1
>= 1.38-r1
2 dev-lang/perl <= 5.8.6-r1 >= 5.8.6-r2
*>= 5.8.5-r3
*>= 5.8.4-r2
*>= 5.8.2-r2
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Javier Fernandez-Sanguino Pena discovered that the DBI library creates
temporary files in an insecure, predictable way (CAN-2005-0077). Paul
Szabo found out that "File::Path::rmtree" also handles temporary files
insecurely (CAN-2004-0452).
Impact
======
A local attacker could create symbolic links in the temporary files
directory that point to a valid file somewhere on the filesystem. When
the DBI library or File::Path::rmtree is executed, this could be used
to overwrite files with the rights of the user calling these functions.
Workaround
==========
There are no known workarounds at this time.
Resolution
==========
All Perl users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose dev-lang/perl
All DBI library users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose dev-perl/dbi
References
==========
[ 1 ] CAN-2005-0077
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0077
[ 2 ] CAN-2004-0452
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200501-38.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2005 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/2.0
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