https://www.openssl.org/news/secadv/20210325.txt OpenSSL Security Advisory with fixes in 1.1.k for: - cert check bypass (CVE-2021-3450) - DoS in TLSv1.2 renegotiation ClientHello (CVE-2021-3449) (You already should have had client initiated renegotiation disabled for CVE-2009-3555, though.)
https://www.openssl.org/news/secadv/20210325.txt OpenSSL Security Advisory with fixes in 1.1.k for: - cert check bypass (CVE-2021-3450) - DoS in TLSv1.2 renegotiation ClientHello (CVE-2021-3449) (You already should have had client initiated renegotiation disabled for CVE-2009-3555, though.)
certificate check bypass with X509_V_FLAG_X509_STRICT (CVE-2021-3450) ======================================================================== Severity: High The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check.