Don't crash if there are no trusted certs
The X509_STORE_CTX_init() docs explicitly allow a NULL parameter for the
X509_STORE. Therefore we shouldn't crash if we subsequently call
X509_verify_cert() and no X509_STORE has been set.
Fixes
@@ -264,6 +264,9 @@ int X509_STORE_CTX_get_by_subject(X509_STORE_CTX *vs, X509_LOOKUP_TYPE type,
X509_OBJECT stmp, *tmp;
int i, j;
+ if (ctx == NULL)
+ return 0;
+
CRYPTO_THREAD_write_lock(ctx->lock);
tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name);
CRYPTO_THREAD_unlock(ctx->lock);
@@ -473,6 +476,9 @@ STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
X509 *x;
X509_OBJECT *obj;
+ if (ctx->ctx == NULL)
+ return NULL;
+
CRYPTO_THREAD_write_lock(ctx->ctx->lock);
idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
if (idx < 0) {
@@ -522,8 +528,10 @@ STACK_OF(X509_CRL) *X509_STORE_CTX_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
X509_OBJECT *obj, *xobj = X509_OBJECT_new();
/* Always do lookup to possibly add new CRLs to cache */
- if (sk == NULL || xobj == NULL ||
- !X509_STORE_CTX_get_by_subject(ctx, X509_LU_CRL, nm, xobj)) {
+ if (sk == NULL
+ || xobj == NULL
+ || ctx->ctx == NULL
+ || !X509_STORE_CTX_get_by_subject(ctx, X509_LU_CRL, nm, xobj)) {
X509_OBJECT_free(xobj);
sk_X509_CRL_free(sk);
return NULL;
@@ -617,6 +625,9 @@ int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
}
X509_OBJECT_free(obj);
+ if (ctx->ctx == NULL)
+ return 0;
+
/* Else find index of first cert accepted by 'check_issued' */
ret = 0;
CRYPTO_THREAD_write_lock(ctx->ctx->lock);
