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Fix some places where X509_up_ref is used

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without error handling.

This takes up the ball from #11278
without trying to solve everything at once.

[extended tests]

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/11850)
This commit is contained in:
Bernd Edlinger 2020-05-17 14:45:28 +02:00
parent 082394839e
commit e9e7b5df86
5 changed files with 51 additions and 21 deletions
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5
crypto/err/openssl.txt
View File

@ -1001,17 +1001,17 @@ PEM_F_D2I_PKCS8PRIVATEKEY_BIO:120:d2i_PKCS8PrivateKey_bio
PEM_F_D2I_PKCS8PRIVATEKEY_FP:121:d2i_PKCS8PrivateKey_fp
PEM_F_DO_B2I:132:do_b2i
PEM_F_DO_B2I_BIO:133:do_b2i_bio
PEM_F_OSSL_DO_BLOB_HEADER:134:ossl_do_blob_header
PEM_F_DO_I2B:146:do_i2b
PEM_F_DO_PK8PKEY:126:do_pk8pkey
PEM_F_DO_PK8PKEY_FP:125:do_pk8pkey_fp
PEM_F_DO_PVK_BODY:135:do_PVK_body
PEM_F_OSSL_DO_PVK_HEADER:136:ossl_do_PVK_header
PEM_F_GET_HEADER_AND_DATA:143:get_header_and_data
PEM_F_GET_NAME:144:get_name
PEM_F_I2B_PVK:137:i2b_PVK
PEM_F_I2B_PVK_BIO:138:i2b_PVK_bio
PEM_F_LOAD_IV:101:load_iv
PEM_F_OSSL_DO_BLOB_HEADER:134:ossl_do_blob_header
PEM_F_OSSL_DO_PVK_HEADER:136:ossl_do_PVK_header
PEM_F_PEM_ASN1_READ:102:PEM_ASN1_read
PEM_F_PEM_ASN1_READ_BIO:103:PEM_ASN1_read_bio
PEM_F_PEM_ASN1_WRITE:104:PEM_ASN1_write
@ -1874,6 +1874,7 @@ X509_F_X509_NAME_PRINT:117:X509_NAME_print
X509_F_X509_OBJECT_NEW:150:X509_OBJECT_new
X509_F_X509_PRINT_EX_FP:118:X509_print_ex_fp
X509_F_X509_PUBKEY_DECODE:148:x509_pubkey_decode
X509_F_X509_PUBKEY_GET:166:X509_PUBKEY_get
X509_F_X509_PUBKEY_GET0:119:X509_PUBKEY_get0
X509_F_X509_PUBKEY_SET:120:X509_PUBKEY_set
X509_F_X509_REQ_CHECK_PRIVATE_KEY:144:X509_REQ_check_private_key

4
crypto/x509/x509_err.c
View File

@ -20,10 +20,10 @@ static const ERR_STRING_DATA X509_str_reasons[] = {
{ERR_PACK(ERR_LIB_X509, 0, X509_R_BASE64_DECODE_ERROR),
"base64 decode error"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CANT_CHECK_DH_KEY), "cant check dh key"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CERT_ALREADY_IN_HASH_TABLE),
"cert already in hash table"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CERTIFICATE_VERIFICATION_FAILED),
"certificate verification failed"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CERT_ALREADY_IN_HASH_TABLE),
"cert already in hash table"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CRL_ALREADY_DELTA), "crl already delta"},
{ERR_PACK(ERR_LIB_X509, 0, X509_R_CRL_VERIFY_FAILURE),
"crl verify failure"},

52
crypto/x509/x509_vfy.c
View File

@ -139,10 +139,9 @@ static X509 *lookup_cert_match(X509_STORE_CTX *ctx, X509 *x)
xtmp = sk_X509_value(certs, i);
if (!X509_cmp(xtmp, x))
break;
xtmp = NULL;
}
if (i < sk_X509_num(certs))
X509_up_ref(xtmp);
else
if (xtmp != NULL && !X509_up_ref(xtmp))
xtmp = NULL;
sk_X509_pop_free(certs, X509_free);
return xtmp;
@ -275,17 +274,24 @@ int X509_verify_cert(X509_STORE_CTX *ctx)
return -1;
}
if (!X509_up_ref(ctx->cert)) {
X509err(X509_F_X509_VERIFY_CERT, ERR_R_INTERNAL_ERROR);
ctx->error = X509_V_ERR_UNSPECIFIED;
return -1;
}
/*
* first we make sure the chain we are going to build is present and that
* the first entry is in place
*/
if (((ctx->chain = sk_X509_new_null()) == NULL) ||
(!sk_X509_push(ctx->chain, ctx->cert))) {
if ((ctx->chain = sk_X509_new_null()) == NULL
|| !sk_X509_push(ctx->chain, ctx->cert)) {
X509_free(ctx->cert);
X509err(X509_F_X509_VERIFY_CERT, ERR_R_MALLOC_FAILURE);
ctx->error = X509_V_ERR_OUT_OF_MEM;
return -1;
}
X509_up_ref(ctx->cert);
ctx->num_untrusted = 1;
/* If the peer's public key is too weak, we can stop early. */
@ -370,11 +376,15 @@ static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
{
*issuer = find_issuer(ctx, ctx->other_ctx, x);
if (*issuer) {
X509_up_ref(*issuer);
return 1;
} else
return 0;
if (*issuer == NULL || !X509_up_ref(*issuer))
goto err;
return 1;
err:
*issuer = NULL;
return 0;
}
static STACK_OF(X509) *lookup_certs_sk(X509_STORE_CTX *ctx,
@ -387,15 +397,20 @@ static STACK_OF(X509) *lookup_certs_sk(X509_STORE_CTX *ctx,
for (i = 0; i < sk_X509_num(ctx->other_ctx); i++) {
x = sk_X509_value(ctx->other_ctx, i);
if (X509_NAME_cmp(nm, X509_get_subject_name(x)) == 0) {
if (!X509_up_ref(x)) {
X509err(X509_F_LOOKUP_CERTS_SK, ERR_R_INTERNAL_ERROR);
ctx->error = X509_V_ERR_UNSPECIFIED;
return NULL;
}
if (sk == NULL)
sk = sk_X509_new_null();
if (sk == NULL || sk_X509_push(sk, x) == 0) {
if (sk == NULL || !sk_X509_push(sk, x)) {
X509_free(x);
sk_X509_pop_free(sk, X509_free);
X509err(X509_F_LOOKUP_CERTS_SK, ERR_R_MALLOC_FAILURE);
ctx->error = X509_V_ERR_OUT_OF_MEM;
return NULL;
}
X509_up_ref(x);
}
}
return sk;
@ -3244,7 +3259,16 @@ static int build_chain(X509_STORE_CTX *ctx)
/* Drop this issuer from future consideration */
(void) sk_X509_delete_ptr(sktmp, xtmp);
if (!X509_up_ref(xtmp)) {
X509err(X509_F_BUILD_CHAIN, ERR_R_INTERNAL_ERROR);
trust = X509_TRUST_REJECTED;
ctx->error = X509_V_ERR_UNSPECIFIED;
search = 0;
continue;
}
if (!sk_X509_push(ctx->chain, xtmp)) {
X509_free(xtmp);
X509err(X509_F_BUILD_CHAIN, ERR_R_MALLOC_FAILURE);
trust = X509_TRUST_REJECTED;
ctx->error = X509_V_ERR_OUT_OF_MEM;
@ -3252,7 +3276,7 @@ static int build_chain(X509_STORE_CTX *ctx)
continue;
}
X509_up_ref(x = xtmp);
x = xtmp;
++ctx->num_untrusted;
ss = cert_self_signed(ctx, xtmp);
if (ss < 0) {

7
crypto/x509/x_pubkey.c
View File

@ -219,8 +219,11 @@ EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key)
EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
{
EVP_PKEY *ret = X509_PUBKEY_get0(key);
if (ret != NULL)
EVP_PKEY_up_ref(ret);
if (ret != NULL && !EVP_PKEY_up_ref(ret)) {
X509err(X509_F_X509_PUBKEY_GET, ERR_R_INTERNAL_ERROR);
ret = NULL;
}
return ret;
}

4
include/openssl/x509err.h
View File

@ -28,6 +28,7 @@ int ERR_load_X509_strings(void);
# define X509_F_ADD_CERT_DIR 0
# define X509_F_BUILD_CHAIN 0
# define X509_F_BY_FILE_CTRL 0
# define X509_F_CACHE_OBJECTS 0
# define X509_F_CHECK_NAME_CONSTRAINTS 0
# define X509_F_CHECK_POLICY 0
# define X509_F_COMMON_VERIFY_SM2 0
@ -68,6 +69,7 @@ int ERR_load_X509_strings(void);
# define X509_F_X509_OBJECT_NEW 0
# define X509_F_X509_PRINT_EX_FP 0
# define X509_F_X509_PUBKEY_DECODE 0
# define X509_F_X509_PUBKEY_GET 0
# define X509_F_X509_PUBKEY_GET0 0
# define X509_F_X509_PUBKEY_SET 0
# define X509_F_X509_REQ_CHECK_PRIVATE_KEY 0
@ -101,8 +103,8 @@ int ERR_load_X509_strings(void);
# define X509_R_BAD_X509_FILETYPE 100
# define X509_R_BASE64_DECODE_ERROR 118
# define X509_R_CANT_CHECK_DH_KEY 114
# define X509_R_CERT_ALREADY_IN_HASH_TABLE 101
# define X509_R_CERTIFICATE_VERIFICATION_FAILED 139
# define X509_R_CERT_ALREADY_IN_HASH_TABLE 101
# define X509_R_CRL_ALREADY_DELTA 127
# define X509_R_CRL_VERIFY_FAILURE 131
# define X509_R_IDP_MISMATCH 128