CVE Vulnerabilities

CVE-2017-8301

Improper Certificate Validation

Published: Apr 27, 2017 | Modified: Oct 03, 2019
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.x
2.6 LOW
AV:N/AC:H/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

Name Vendor Start Version End Version
Libressl Openbsd 2.5.1 (including) 2.5.1 (including)
Libressl Openbsd 2.5.2 (including) 2.5.2 (including)
Libressl Openbsd 2.5.3 (including) 2.5.3 (including)

Potential Mitigations

References