CVE-2018-8970 | BDVDB-2026-98265 Detail

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.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

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

Exploit#

No public exploit known

History#

Version 12018-03-24Record published in the CVE List.
Version 22024-08-05Most recent update recorded in the CVE List.