GLSA 201111-09: Perl Safe module: Arbitrary Perl code injection

Severity:normal
Title:Perl Safe module: Arbitrary Perl code injection
Date:11/20/2011
Bugs: #325563
ID:201111-09

Synopsis

The Safe module for Perl does not properly restrict code, allowing a remote attacker to execute arbitrary Perl code outside of a restricted compartment.

Background

Safe is a Perl module to compile and execute code in restricted compartments.

Affected packages

Package Vulnerable Unaffected Architecture(s)
perl-core/Safe < 2.27 >= 2.27 All supported architectures
virtual/perl-Safe < 2.27 >= 2.27 All supported architectures

Description

Unsafe code evaluation prevents the Safe module from properly restricting the code of implicitly called methods on implicitly blessed objects.

Impact

A remote attacker could entice a user to load a specially crafted Perl script, resulting in execution arbitrary Perl code outside of a restricted compartment.

Workaround

There is no known workaround at this time.

Resolution

All users of the standalone Perl Safe module should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=perl-core/Safe-2.27"
    

All users of the Safe module bundled with Perl should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=virtual/perl-Safe-2.27"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since July 18, 2010. It is likely that your system is already no longer affected by this issue.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201111-09.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.

License

Copyright 2010 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.

Thank you!