CVE-2015-1793
The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA...
- Published
- Jul 9, 2015
- Updated
- Aug 6, 2024
- Assigning CNA
- redhat
- Evidence observed
- Nov 5, 2015
Primary CVSS
nvd · CVSS 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NHigh · next 30 days
- Percentile
- 99.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.
Sources
1Ramon de C Valle · multiple · Nov 5, 2015
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