CVE-2021-46880

x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes discarded.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
openbsdlibressl
𝑥
< 3.4.2
openbsdopenbsd
𝑥
< 7.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4.2-relnotes.txt
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/006_x509.patch.sig
https://github.com/openbsd/src/commit/3f851282810fa0ab4b90b3b1ecec2e8717ef16f8
https://security.netapp.com/advisory/ntap-20230517-0006/
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4.2-relnotes.txt
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/006_x509.patch.sig
https://github.com/openbsd/src/commit/3f851282810fa0ab4b90b3b1ecec2e8717ef16f8
https://security.netapp.com/advisory/ntap-20230517-0006/