How severe is CVE-2018-8970?

This vulnerability has a severity rating of HIGH with a CVSS score of 7.4 out of 10.

What type of vulnerability is CVE-2018-8970?

This is classified as CWE-295, which is a common weakness in software security.

CVE-2018-8970 - HIGH Severity | CVSS 7.4

Vulnerability Description

The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.

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