CVE-2018-8970

State: Published
Severity: Not scored
Published: Mar 24, 2018
Updated: Aug 5, 2024
Reserved: Mar 24, 2018

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt
https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff

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