TLS Certificate Verification Flaw in LibreSSL Affects NGINX
CVE-2017-8301

5.3MEDIUM

Key Information:

Vendor
OpenBSD
Status
Libressl
Vendor
CVE Published:
27 April 2017

Summary

A vulnerability has been identified in LibreSSL versions 2.5.1 to 2.5.3, which allows for inadequate TLS certificate verification. This arises when a user-provided verification callback returns a successful result (1) without properly validating the certificate. Consequently, this flaw results in the acceptance of invalid certificates by applications utilizing NGINX, posing a significant security risk.

References

http://seclists.org/oss-sec/2017/q2/145
x_refsource_MISC
https://github.com/libressl-portable/portable/issues/307
x_refsource_CONFIRM
https://trac.nginx.org/nginx/ticket/1257
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.