diff options
Diffstat (limited to 'openssl-1.1.0h/test/verify_extra_test.c')
| -rw-r--r-- | openssl-1.1.0h/test/verify_extra_test.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/openssl-1.1.0h/test/verify_extra_test.c b/openssl-1.1.0h/test/verify_extra_test.c new file mode 100644 index 0000000..cc05bc2 --- /dev/null +++ b/openssl-1.1.0h/test/verify_extra_test.c @@ -0,0 +1,162 @@ +/* + * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (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 <openssl/crypto.h> +#include <openssl/bio.h> +#include <openssl/x509.h> +#include <openssl/pem.h> +#include <openssl/err.h> + +static STACK_OF(X509) *load_certs_from_file(const char *filename) +{ + STACK_OF(X509) *certs; + BIO *bio; + X509 *x; + + bio = BIO_new_file(filename, "r"); + + if (bio == NULL) { + return NULL; + } + + certs = sk_X509_new_null(); + if (certs == NULL) { + BIO_free(bio); + return NULL; + } + + ERR_set_mark(); + do { + x = PEM_read_bio_X509(bio, NULL, 0, NULL); + if (x != NULL && !sk_X509_push(certs, x)) { + sk_X509_pop_free(certs, X509_free); + BIO_free(bio); + return NULL; + } else if (x == NULL) { + /* + * We probably just ran out of certs, so ignore any errors + * generated + */ + ERR_pop_to_mark(); + } + } while (x != NULL); + + BIO_free(bio); + + return certs; +} + +/* + * Test for CVE-2015-1793 (Alternate Chains Certificate Forgery) + * + * Chain is as follows: + * + * rootCA (self-signed) + * | + * interCA + * | + * subinterCA subinterCA (self-signed) + * | | + * leaf ------------------ + * | + * bad + * + * rootCA, interCA, subinterCA, subinterCA (ss) all have CA=TRUE + * leaf and bad have CA=FALSE + * + * subinterCA and subinterCA (ss) have the same subject name and keys + * + * interCA (but not rootCA) and subinterCA (ss) are in the trusted store + * (roots.pem) + * leaf and subinterCA are in the untrusted list (untrusted.pem) + * bad is the certificate being verified (bad.pem) + * + * Versions vulnerable to CVE-2015-1793 will fail to detect that leaf has + * CA=FALSE, and will therefore incorrectly verify bad + * + */ +static int test_alt_chains_cert_forgery(const char *roots_f, + const char *untrusted_f, + const char *bad_f) +{ + int ret = 0; + int i; + X509 *x = NULL; + STACK_OF(X509) *untrusted = NULL; + BIO *bio = NULL; + X509_STORE_CTX *sctx = NULL; + X509_STORE *store = NULL; + X509_LOOKUP *lookup = NULL; + + store = X509_STORE_new(); + if (store == NULL) + goto err; + + lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file()); + if (lookup == NULL) + goto err; + if(!X509_LOOKUP_load_file(lookup, roots_f, X509_FILETYPE_PEM)) + goto err; + + untrusted = load_certs_from_file(untrusted_f); + + if ((bio = BIO_new_file(bad_f, "r")) == NULL) + goto err; + + if((x = PEM_read_bio_X509(bio, NULL, 0, NULL)) == NULL) + goto err; + + sctx = X509_STORE_CTX_new(); + if (sctx == NULL) + goto err; + + if (!X509_STORE_CTX_init(sctx, store, x, untrusted)) + goto err; + + i = X509_verify_cert(sctx); + + if (i == 0 && X509_STORE_CTX_get_error(sctx) == X509_V_ERR_INVALID_CA) { + /* This is the result we were expecting: Test passed */ + ret = 1; + } + err: + X509_STORE_CTX_free(sctx); + X509_free(x); + BIO_free(bio); + sk_X509_pop_free(untrusted, X509_free); + X509_STORE_free(store); + if (ret != 1) + ERR_print_errors_fp(stderr); + return ret; +} + +int main(int argc, char **argv) +{ + CRYPTO_set_mem_debug(1); + CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); + + if (argc != 4) { + fprintf(stderr, "usage: verify_extra_test roots.pem untrusted.pem bad.pem\n"); + return 1; + } + + if (!test_alt_chains_cert_forgery(argv[1], argv[2], argv[3])) { + fprintf(stderr, "Test alt chains cert forgery failed\n"); + return 1; + } + +#ifndef OPENSSL_NO_CRYPTO_MDEBUG + if (CRYPTO_mem_leaks_fp(stderr) <= 0) + return 1; +#endif + + printf("PASS\n"); + return 0; +} |