High severity · published Dec 13, 2021
CVE-2020-16156
CPAN 2.28 allows Signature Verification Bypass
7.8
CVSS
0.9%
EPSS
No
On KEV
Description
CPAN 2.28 allows Signature Verification Bypass.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
Comprehensive Perl Archive Network · Perl
2.28; 2.28 · source: NVD
FE
Fedora · Fedoraproject
34; 35 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-16156
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-16156
Exploit
http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html
Exploit
https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
Product
https://metacpan.org/pod/distribution/CPAN/scripts/cpan
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/10/msg00017.html
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