curl: wolfSSL Backend Silently Ignores --cert-status (OCSP Stapling Bypass)

Summary When curl is built with the wolfSSL TLS backend, --cert-status CURLOPTSSLVERIFYSTATUS is silently accepted and ignored. The wolfSSL backend sets certstatusrequest = NULL in its vtable lib/vtls/wolfssl.c:2309, meaning OCSP stapling is not implemented. The curleasysetopt call returns...

curl: OpenSSL `--cert-status` accepts indefinitely stale GOOD OCSP staples

Summary When curl uses its OpenSSL backend with CURLOPTSSLVERIFYSTATUS the --cert-status tool option, a correctly signed OCSP response can be accepted forever if its optional nextUpdate field is absent. curl passes -1 as OpenSSL's maximum permitted age for thisUpdate, explicitly disabling the onl...

CVE-2020-8286

Libcurl offers "OCSP stapling" via the CURLOPTSSLVERIFYSTATUS option. When set, libcurl verifies the OCSP response that a server responds with as part of the TLS handshake. It then aborts the TLS negotiation if something is wrong with the response. The same feature can be enabled with --cert-stat...