CVE-2020-16156

CPAN 2.28 allows Signature Verification Bypass.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html	Exploit Third Party Advisory
https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/	Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
https://metacpan.org/pod/distribution/CPAN/scripts/cpan	Product Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:-::::perl::*
	cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:trial::::perl::*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:34:::::::*
	cpe:2.3:o:fedoraproject:fedora:35:::::::*

History

No history.

Information

Published : 2021-12-13 18:15

Updated : 2023-11-07 03:18

NVD link : CVE-2020-16156

Mitre link : CVE-2020-16156

CVE.ORG link : CVE-2020-16156

JSON object : View

Products Affected

perl

comprehensive_perl_archive_network

fedoraproject

fedora

CWE

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2020-16156", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2021-12-13T18:15:07.943", "references": [{"url": "http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/", "source": "cve@mitre.org"}, {"url": "https://metacpan.org/pod/distribution/CPAN/scripts/cpan", "tags": ["Product", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "CPAN 2.28 allows Signature Verification Bypass."}, {"lang": "es", "value": "CPAN versi\u00f3n 2.28, permite una Omisi\u00f3n de Verificaci\u00f3n de Firmas"}], "lastModified": "2023-11-07T03:18:12.830", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:-:*:*:*:perl:*:*", "vulnerable": true, "matchCriteriaId": "410C0D66-B07E-4B1D-A71E-5E5D8C737CC4"}, {"criteria": "cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:trial:*:*:*:perl:*:*", "vulnerable": true, "matchCriteriaId": "20F53CB0-E9E7-41CF-AAF1-58328E5E0A30"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}