Bug 829117 (CVE-2020-16156)

Summary:	<perl-core/CPAN-2.290.0: signature verification bypass (CVE-2020-16156)
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	minor	CC:	perl
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/
Whiteboard:	A4 [noglsa]
Package list:		Runtime testing required:	---
Bug Depends on:	829572
Bug Blocks:

Description John Helmert III archtester

2021-12-13 19:55:52 UTC

CVE-2020-16156:

CPAN 2.28 allows Signature Verification Bypass.

Can't see if there's a fixed version based on URL.

Comment 1 Andreas K. Hüttel archtester

2021-12-18 15:53:36 UTC

http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html

Fixed in dev-lang/perl-5.34.0-r6 (to be committed) via pulling in CPAN-2.29

Comment 2 Larry the Git Cow gentoo-dev

2021-12-18 15:56:45 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=6c82144c1ddc4de8941a324083ff839f32365a78

commit 6c82144c1ddc4de8941a324083ff839f32365a78
Author:     Andreas K. Hüttel <dilfridge@gentoo.org>
AuthorDate: 2021-12-18 15:56:28 +0000
Commit:     Andreas K. Hüttel <dilfridge@gentoo.org>
CommitDate: 2021-12-18 15:56:28 +0000

    dev-lang/perl: Revbump, requires CPAN 2.29
    
    Bug: https://bugs.gentoo.org/829117
    Package-Manager: Portage-3.0.28, Repoman-3.0.3
    Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>

 dev-lang/perl/perl-5.34.0-r6.ebuild | 813 ++++++++++++++++++++++++++++++++++++
 1 file changed, 813 insertions(+)