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Fedora 22: Security Advisory for perl-Module-Signature Critical Issues

fedora
Calendar Grey April 21, 2015
Dist Fedora Esm H88
A security patch for perl-Module-Signature in Fedora 22 mitigates several severe vulnerabilities, including potential code execution threats.
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 behaviour 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 c...

Read the Full Advisory

Change Log

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
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Name: perl-Module-Signature
Product: Fedora 22
Version: 0.78
Release: 1.fc22
Summary: CPAN signature management utilities and modules

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