Alerts This Week
Warning Icon 1 714
Alerts This Week
Warning Icon 1 714

Fedora 21: 2015-5833 Important Update for perl-Module-Signature - Exec Risk

fedora
Calendar Grey April 18, 2015
Dist Fedora Esm H88
Fedora has released an essential patch for perl-Module-Signature to fix vulnerabilities that could allow for possible abuses.
This update addresses various security issues in perl-Module-Signature as described below

Summary

This package contains a command line tool and module for checking and creating

SIGNATURE files for Perl CPAN distributions.

Update Information:

This update addresses various security issues in perl-Module-Signature as described below. The default behavior is also changed so as to ignore any MANIFEST.SKIP files unless a "skip" parameter is specified. An updated version of perl-Test-Signature that accounts for the changed default behavior is included in this update.

Security issues:

* Module::Signature before version 0.75 could be tricked into interpreting the unsigned portion of a SIGNATURE file as the signed portion due to faulty parsing of the PGP signature boundaries.

* When verifying the contents of a CPAN module, Module::Signature before version 0.75 ignored some files in the extracted tarball that were not listed in the signature file. This included some files in the t/ directory that would execute automatically during "make test".

* Module::Signature before version 0.75 used two argument open() calls to read the files when generating checksums from the signed manifest. This allowed embedding arbitrary shell co...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory update critical Fedora arbitrary execution perl-Module-Signature

Change Log

* Thu Apr 9 2015 Paul Howarth - 0.78-1 - Update to 0.78 - Fix verify() use from cpanm and CPAN.pm * Wed Apr 8 2015 Paul Howarth - 0.77-1 - Update to 0.77 - Include the latest public keys of PAUSE, ANDK and AUDREYT - Clarify scripts/cpansign copyright to CC0 (#965126, CPAN RT#85466) * Wed Apr 8 2015 Paul Howarth - 0.76-1 - Update to 0.76 - Fix signature tests by defaulting to verify(skip=>1) when $ENV{TEST_SIGNATURE} is true * Tue Apr 7 2015 Paul Howarth - 0.75-1 - Update to 0.75 - Fix GPG signature parsing logic - MANIFEST.SKIP is no longer consulted unless --skip is given - Properly use open() modes to avoid injection attacks - More protection of @INC from relative paths - Don't try to run the signature test, which needs the network * Wed Aug 27 2014 Jitka Plesnikova - 0.73-5 - Perl 5.20 rebuild

References


[ 1 ] Bug #1209911 - perl-Module-Signature: unsigned files interpreted as signed in some circumstances https://bugzilla.redhat.com/show_bug.cgi?id=1209911 [ 2 ] Bug #1209915 - perl-Module-Signature: arbitrary code execution during test phase https://bugzilla.redhat.com/show_bug.cgi?id=1209915 [ 3 ] Bug #1209917 - perl-Module-Signature: arbitrary code execution when verifying module signatures https://bugzilla.redhat.com/show_bug.cgi?id=1209917 [ 4 ] Bug #1209918 - perl-Module-Signature: arbitrary modules loading in some circumstances https://bugzilla.redhat.com/show_bug.cgi?id=1209918

Update Instructions

This update can be installed with the "yum" update program. Use su -c 'yum update perl-Module-Signature' at the command line. For more information, refer to "Managing Software with yum", available at .

Severity
important
Lowest
Low
Medium
High
Critical

Name: perl-Module-Signature
Product: Fedora 21
Version: 0.78
Release: 1.fc21
URL: https://metacpan.org/dist/Module-Signature
Summary: CPAN signature management utilities and modules

Topics%20covered

Topics Covered

security advisory update critical Fedora arbitrary execution perl-Module-Signature

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here