CVE-2018-8970

HighCVSS 7.4/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 7.4/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-295

Affected software

No affected versions have been published.

Timeline

Published: Mar 24, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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