GLSA 200501-38: Perl: rmtree and DBI tmpfile vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Perl: rmtree and DBI tmpfile vulnerabilities
Date:	01/26/2005
Bugs:	#75696, #78634, #79685
ID:	200501-38

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	Architecture(s)
dev-perl/DBI	<= 1.38	>= 1.37-r1	All supported architectures
dev-lang/perl	<= 5.8.6-r3	>= 5.8.6-r4	All 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" is vulnerable to various race conditions (CAN-2004-0452, CAN-2005-0448).

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 or remove 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

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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.