openssl/crypto/x509/x509_txt.c
Tomas Mraz cccf532fef Disallow certs with explicit curve in verification chain
The check is applied only with X509_V_FLAG_X509_STRICT.

Fixes #12139

Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/12683)
2020-09-17 17:15:15 +02:00

221 lines
9.8 KiB
C

/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <time.h>
#include <errno.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/evp.h>
#include <openssl/asn1.h>
#include <openssl/x509.h>
#include <openssl/objects.h>
const char *X509_verify_cert_error_string(long n)
{
switch ((int)n) {
case X509_V_OK:
return "ok";
case X509_V_ERR_UNSPECIFIED:
return "unspecified certificate verification error";
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
return "unable to get issuer certificate";
case X509_V_ERR_UNABLE_TO_GET_CRL:
return "unable to get certificate CRL";
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
return "unable to decrypt certificate's signature";
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
return "unable to decrypt CRL's signature";
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
return "unable to decode issuer public key";
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
return "certificate signature failure";
case X509_V_ERR_CRL_SIGNATURE_FAILURE:
return "CRL signature failure";
case X509_V_ERR_CERT_NOT_YET_VALID:
return "certificate is not yet valid";
case X509_V_ERR_CERT_HAS_EXPIRED:
return "certificate has expired";
case X509_V_ERR_CRL_NOT_YET_VALID:
return "CRL is not yet valid";
case X509_V_ERR_CRL_HAS_EXPIRED:
return "CRL has expired";
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
return "format error in certificate's notBefore field";
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
return "format error in certificate's notAfter field";
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
return "format error in CRL's lastUpdate field";
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
return "format error in CRL's nextUpdate field";
case X509_V_ERR_OUT_OF_MEM:
return "out of memory";
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
return "self-signed certificate";
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
return "self-signed certificate in certificate chain";
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
return "unable to get local issuer certificate";
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
return "unable to verify the first certificate";
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
return "certificate chain too long";
case X509_V_ERR_CERT_REVOKED:
return "certificate revoked";
case X509_V_ERR_NO_ISSUER_PUBLIC_KEY:
return "issuer certificate doesn't have a public key";
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
return "path length constraint exceeded";
case X509_V_ERR_INVALID_PURPOSE:
return "unsupported certificate purpose";
case X509_V_ERR_CERT_UNTRUSTED:
return "certificate not trusted";
case X509_V_ERR_CERT_REJECTED:
return "certificate rejected";
case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:
return "subject issuer mismatch";
case X509_V_ERR_AKID_SKID_MISMATCH:
return "authority and subject key identifier mismatch";
case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:
return "authority and issuer serial number mismatch";
case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
return "key usage does not include certificate signing";
case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
return "unable to get CRL issuer certificate";
case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
return "unhandled critical extension";
case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:
return "key usage does not include CRL signing";
case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:
return "unhandled critical CRL extension";
case X509_V_ERR_INVALID_NON_CA:
return "invalid non-CA certificate (has CA markings)";
case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:
return "proxy path length constraint exceeded";
case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:
return "key usage does not include digital signature";
case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:
return
"proxy certificates not allowed, please set the appropriate flag";
case X509_V_ERR_INVALID_EXTENSION:
return "invalid or inconsistent certificate extension";
case X509_V_ERR_INVALID_POLICY_EXTENSION:
return "invalid or inconsistent certificate policy extension";
case X509_V_ERR_NO_EXPLICIT_POLICY:
return "no explicit policy";
case X509_V_ERR_DIFFERENT_CRL_SCOPE:
return "different CRL scope";
case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:
return "unsupported extension feature";
case X509_V_ERR_UNNESTED_RESOURCE:
return "RFC 3779 resource not subset of parent's resources";
case X509_V_ERR_PERMITTED_VIOLATION:
return "permitted subtree violation";
case X509_V_ERR_EXCLUDED_VIOLATION:
return "excluded subtree violation";
case X509_V_ERR_SUBTREE_MINMAX:
return "name constraints minimum and maximum not supported";
case X509_V_ERR_APPLICATION_VERIFICATION:
return "application verification failure";
case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE:
return "unsupported name constraint type";
case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX:
return "unsupported or invalid name constraint syntax";
case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX:
return "unsupported or invalid name syntax";
case X509_V_ERR_CRL_PATH_VALIDATION_ERROR:
return "CRL path validation error";
case X509_V_ERR_PATH_LOOP:
return "path loop";
case X509_V_ERR_SUITE_B_INVALID_VERSION:
return "Suite B: certificate version invalid";
case X509_V_ERR_SUITE_B_INVALID_ALGORITHM:
return "Suite B: invalid public key algorithm";
case X509_V_ERR_SUITE_B_INVALID_CURVE:
return "Suite B: invalid ECC curve";
case X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM:
return "Suite B: invalid signature algorithm";
case X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED:
return "Suite B: curve not allowed for this LOS";
case X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256:
return "Suite B: cannot sign P-384 with P-256";
case X509_V_ERR_HOSTNAME_MISMATCH:
return "hostname mismatch";
case X509_V_ERR_EMAIL_MISMATCH:
return "email address mismatch";
case X509_V_ERR_IP_ADDRESS_MISMATCH:
return "IP address mismatch";
case X509_V_ERR_DANE_NO_MATCH:
return "no matching DANE TLSA records";
case X509_V_ERR_EE_KEY_TOO_SMALL:
return "EE certificate key too weak";
case X509_V_ERR_CA_KEY_TOO_SMALL:
return "CA certificate key too weak";
case X509_V_ERR_CA_MD_TOO_WEAK:
return "CA signature digest algorithm too weak";
case X509_V_ERR_INVALID_CALL:
return "invalid certificate verification context";
case X509_V_ERR_STORE_LOOKUP:
return "issuer certificate lookup error";
case X509_V_ERR_NO_VALID_SCTS:
return "Certificate Transparency required, but no valid SCTs found";
case X509_V_ERR_PROXY_SUBJECT_NAME_VIOLATION:
return "proxy subject name violation";
case X509_V_ERR_OCSP_VERIFY_NEEDED:
return "OCSP verification needed";
case X509_V_ERR_OCSP_VERIFY_FAILED:
return "OCSP verification failed";
case X509_V_ERR_OCSP_CERT_UNKNOWN:
return "OCSP unknown cert";
case X509_V_ERR_UNSUPPORTED_SIGNATURE_ALGORITHM:
return "Cannot find certificate signature algorithm";
case X509_V_ERR_SIGNATURE_ALGORITHM_MISMATCH:
return "subject signature algorithm and issuer public key algorithm mismatch";
case X509_V_ERR_SIGNATURE_ALGORITHM_INCONSISTENCY:
return "cert info siganature and signature algorithm mismatch";
case X509_V_ERR_INVALID_CA:
return "invalid CA certificate";
case X509_V_ERR_PATHLEN_INVALID_FOR_NON_CA:
return "Path length invalid for non-CA cert";
case X509_V_ERR_PATHLEN_WITHOUT_KU_KEY_CERT_SIGN:
return "Path length given without key usage keyCertSign";
case X509_V_ERR_KU_KEY_CERT_SIGN_INVALID_FOR_NON_CA:
return "Key usage keyCertSign invalid for non-CA cert";
case X509_V_ERR_ISSUER_NAME_EMPTY:
return "Issuer name empty";
case X509_V_ERR_SUBJECT_NAME_EMPTY:
return "Subject name empty";
case X509_V_ERR_MISSING_AUTHORITY_KEY_IDENTIFIER:
return "Missing Authority Key Identifier";
case X509_V_ERR_MISSING_SUBJECT_KEY_IDENTIFIER:
return "Missing Subject Key Identifier";
case X509_V_ERR_EMPTY_SUBJECT_ALT_NAME:
return "Empty Subject Alternative Name extension";
case X509_V_ERR_CA_BCONS_NOT_CRITICAL:
return "Basic Constraints of CA cert not marked critical";
case X509_V_ERR_EMPTY_SUBJECT_SAN_NOT_CRITICAL:
return "Subject empty and Subject Alt Name extension not critical";
case X509_V_ERR_AUTHORITY_KEY_IDENTIFIER_CRITICAL:
return "Authority Key Identifier marked critical";
case X509_V_ERR_SUBJECT_KEY_IDENTIFIER_CRITICAL:
return "Subject Key Identifier marked critical";
case X509_V_ERR_CA_CERT_MISSING_KEY_USAGE:
return "CA cert does not include key usage extension";
case X509_V_ERR_EXTENSIONS_REQUIRE_VERSION_3:
return "Using cert extension requires at least X509v3";
case X509_V_ERR_EC_KEY_EXPLICIT_PARAMS:
return "Certificate public key has explicit ECC parameters";
default:
/* Printing an error number into a static buffer is not thread-safe */
return "unknown certificate verification error";
}
}