Vulnerability Details : CVE-2017-8301
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.
Products affected by CVE-2017-8301
- cpe:2.3:a:openbsd:libressl:2.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:openbsd:libressl:2.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:openbsd:libressl:2.5.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-8301
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-8301
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.6
|
LOW | AV:N/AC:H/Au:N/C:N/I:P/A:N |
4.9
|
2.9
|
NIST | |
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
1.6
|
3.6
|
NIST |
CWE ids for CVE-2017-8301
-
The product does not validate, or incorrectly validates, a certificate.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-8301
-
http://www.securityfocus.com/bid/98076
LibreSSL CVE-2017-8301 Certificate Validation Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
http://seclists.org/oss-sec/2017/q2/145
oss-sec: CVE-2017-8301: TLS verification vulnerability in LibreSSL 2.5.1 - 2.5.3Mailing List;Third Party Advisory
-
https://github.com/libressl-portable/portable/issues/307
Some nginx TLS tests started failing with LibreSSL 2.5.3 (but not with 2.4.4) · Issue #307 · libressl-portable/portable · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://trac.nginx.org/nginx/ticket/1257
#1257 (Some nginx TLS tests started failing with LibreSSL 2.5.3) – nginxIssue Tracking;Patch;Third Party Advisory
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