Vulnerability in Perl Comprehensive Archive Network
CVE-2020-16156
CPAN 2.28 allows Signature Verification Bypass.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Perl Comprehensive Archive Network — versions 2.28
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- metacpan.org/pod/distribution/CPAN/scripts/cpan (Product, Third Party Advisory)
- blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ (Exploit, Third Party Advisory)
- blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-c… (Exploit, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2020-16156?
- CVE-2020-16156 is a high-severity vulnerability in Perl Comprehensive Archive Network, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.8/10. Published 2021-12-13.
- How severe is CVE-2020-16156?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-16156 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.