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.

• CWE-295

• http://seclists.org/oss-sec/2017/q2/145Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/98076Third Party Advisory, VDB Entry
• https://github.com/libressl-portable/portable/issues/307Issue Tracking, Patch, Third Party Advisory
• https://trac.nginx.org/nginx/ticket/1257Issue Tracking, Patch, Third Party Advisory
• http://seclists.org/oss-sec/2017/q2/145Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/98076Third Party Advisory, VDB Entry
• https://github.com/libressl-portable/portable/issues/307Issue Tracking, Patch, Third Party Advisory
• https://trac.nginx.org/nginx/ticket/1257Issue Tracking, Patch, Third Party Advisory

Published

Apr 27, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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