Bug 1075478

Summary: Crash in Digest::SHA if a method is invoked on an uninitialized object
Product: [Fedora] Fedora Reporter: Petr Pisar <ppisar>
Component: perl-Digest-SHAAssignee: Petr Pisar <ppisar>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: perl-devel, ppisar
Target Milestone: ---Keywords: Patch
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
URL: http://nntp.perl.org/group/perl.perl5.porters/213679
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Fixed In Version: Doc Type: Bug Fix
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Clone Of:
: 1075504 1075514 (view as bug list) Environment:
Last Closed: 2014-07-02 13:20:35 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Fix none

Description Petr Pisar 2014-03-12 09:08:26 UTC 
If Digest::SHA's method is called on an unintialized object (missing Digest::SHA->new()), the Digest::SHA crashes:

$ perl -MData::Dumper -e 'use Digest::SHA; $d=Digest::SHA->add(); print Data::Dumper::Dumper(\$d);'
Segmentation fault

$ perl -e 'use Digest::SHA; print Digest::SHA->add(qq(a))->hexdigest'
Segmentation fault

This has been fixed in Digest-SHA-5.87. F19 and F20 are affected.
Comment 1 Petr Pisar 2014-03-12 09:40:02 UTC 
Test:

perl -e 'use Digest::SHA; $d=Digest::SHA->add(qq(a)); for (qw(shaclose shadump shadup shaload shaopen sharewind shawrite hashsize add digest)) { eval {$d->$_}; die "$_: $@" unless $@ =~ /on an undefined value/ }'
Comment 2 Petr Pisar 2014-03-12 09:40:44 UTC 
Created attachment 873411 [details]
Fix
Comment 3 Fedora Update System 2014-03-12 09:54:33 UTC 
perl-Digest-SHA-5.85-5.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/perl-Digest-SHA-5.85-5.fc20
Comment 4 Fedora Update System 2014-03-12 09:54:52 UTC 
perl-Digest-SHA-5.85-2.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/perl-Digest-SHA-5.85-2.fc19
Comment 5 Fedora Update System 2014-03-21 09:28:30 UTC 
perl-Digest-SHA-5.85-5.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2014-03-21 09:38:10 UTC 
perl-Digest-SHA-5.85-2.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.