[Bug 2035341] CVE-2020-16154 perl-App-cpanminus: Bypass of verification of signatures in CHECKSUMS files

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https://bugzilla.redhat.com/show_bug.cgi?id=2035341

Tomas Hoger <thoger@xxxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|CVE-2020-16154              |CVE-2020-16154
                   |perl-App-cpanminus:         |perl-App-cpanminus: Bypass
                   |signature verification      |of verification of
                   |bypass                      |signatures in CHECKSUMS
                   |                            |files



--- Comment #2 from Tomas Hoger <thoger@xxxxxxxxxx> ---
Refer to bug 2035273 comment 2 for additional details about this issue.  Bug
2035273 covers these problems in perl-CPAN / CPAN.pm, and App::cpanminus is
affected in a similar way and hence the description of issues applies to both
modules.

The App::cpanminus module has not yet been fixed for this issue.  Fixes were
only applied to Menlo / Menlo-Legacy, which is a development version of the
future cpanm version 2.0.

Commit that corrects checking of the Module::Signature::_verify() return value:
https://github.com/miyagawa/cpanminus/commit/98f43b64165a54e05ce25f9de09284ccb34f4776

Commit that adds support for the cpan_path attributed in CHECKSUMS files:
https://github.com/miyagawa/cpanminus/commit/3c93db75ccbc75c813c7f12ea0301af20a265f65


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