CVE-2021-46880: Improper Certificate Validation

April 15, 2023 (updated May 17, 2023)

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.

References

ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4.2-relnotes.txt
ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/006_x509.patch.sig
github.com/openbsd/src/commit/3f851282810fa0ab4b90b3b1ecec2e8717ef16f8
nvd.nist.gov/vuln/detail/CVE-2021-46880

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