Vulnerability in Openbsd Libressl
CVE-2018-8970
The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently al…
Vulnerability class: Improper Certificate Validation
EPSS: 0.011 (60.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Openbsd Libressl — versions 2.7.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-8970?
- CVE-2018-8970 is a high-severity vulnerability in Openbsd Libressl, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2018-03-24.
- How severe is CVE-2018-8970?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2018-8970 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.