CVE-2017-8301 json
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 resu…
published 2017-04-27 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17262
- cvss
- 5.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- libressl Alpine 3.24, Alpine 3.23, Alpine 3.22 +16 more 2.5.3-r1
alpine advisories ALPINE-CVE-2017-8301
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
github.com
/libressl-portable/portable/issues/307
issue-tracking, patch, third-party-advisory
-
trac.nginx.org
/nginx/ticket/1257
issue-tracking, patch, third-party-advisory
-
seclists.org
/oss-sec/2017/q2/145
mailing-list, third-party-advisory
-
securityfocus.com
/bid/98076
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-8301
- NVD CVE-2017-8301
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.