#VU68606 Improper Verification of Cryptographic Signature in CPAN - CVE-2020-16156
Published: October 24, 2022
Vulnerability identifier: #VU68606
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2020-16156
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
CPAN
CPAN
Software vendor:
CPAN
CPAN
Description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect processing of signed code. A remote attacker trick the victim into downloading a malicious file, bypass signature verification procedure and compromise the affected system.
Remediation
Install updates from vendor's website.
External links
- https://metacpan.org/pod/distribution/CPAN/scripts/cpan
- https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/
- http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/