X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=ssl%2Fkssl.c;h=a80f5b2f74dad0019f31da33d79da7885911e1a0;hb=705d0f5c8d57a72b003647586a6be371e7e79e27;hp=c294166b9d3f0aac6e2fb72fe77777477cdeb25e;hpb=54a656ef081f72a740c550ebd8099b40b8b5cde0;p=oweals%2Fopenssl.git

diff --git a/ssl/kssl.c b/ssl/kssl.c
index c294166b9d..a80f5b2f74 100644
--- a/ssl/kssl.c
+++ b/ssl/kssl.c
@@ -70,6 +70,7 @@
 
 #define _XOPEN_SOURCE /* glibc2 needs this to declare strptime() */
 #include <time.h>
+#undef _XOPEN_SOURCE /* To avoid clashes with anything else... */
 #include <string.h>
 
 #include <openssl/ssl.h>
@@ -1550,7 +1551,7 @@ kssl_ctx_free(KSSL_CTX *kssl_ctx)
         {
 	if (kssl_ctx == NULL)  return kssl_ctx;
 
-	if (kssl_ctx->key)  		memset(kssl_ctx->key, 0,
+	if (kssl_ctx->key)  		OPENSSL_cleanse(kssl_ctx->key,
 							      kssl_ctx->length);
 	if (kssl_ctx->key)  		free(kssl_ctx->key);
 	if (kssl_ctx->client_princ) 	free(kssl_ctx->client_princ);
@@ -1654,7 +1655,7 @@ kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session)
 
 	if (kssl_ctx->key)
                 {
-		memset(kssl_ctx->key, 0, kssl_ctx->length);
+		OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
 		free(kssl_ctx->key);
 		}
 
@@ -1961,7 +1962,7 @@ krb5_error_code  kssl_check_authent(
 	const EVP_CIPHER	*enc = NULL;
 	unsigned char		iv[EVP_MAX_IV_LENGTH];
 	unsigned char		*p, *unenc_authent;
-	int 			padl, outl, unencbufsize;
+	int 			outl, unencbufsize;
 	struct tm		tm_time, *tm_l, *tm_g;
 	time_t			now, tl, tg, tr, tz_offset;
 
@@ -2029,44 +2030,23 @@ krb5_error_code  kssl_check_authent(
 		*/
 		goto err;
 		}
-	if (!EVP_DecryptInit_ex(&ciph_ctx, enc, NULL, kssl_ctx->key, iv))
-		{
-		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
-			"EVP_DecryptInit_ex error decrypting authenticator.\n");
-		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
-		goto err;
-		}
-	if (!EVP_DecryptUpdate(&ciph_ctx, unenc_authent, &outl,
-			dec_authent->cipher->data, dec_authent->cipher->length))
-		{
-		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
-			"EVP_DecryptUpdate error decrypting authenticator.\n");
-		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
-		goto err;
-		}
-	if (outl > unencbufsize)
-		{
-		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
-                        "Buffer overflow decrypting authenticator.\n");
-		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
-		goto err;
-		}
-	if (!EVP_DecryptFinal_ex(&ciph_ctx, &(unenc_authent[outl]), &padl))
-		{
-		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
-			"EVP_DecryptFinal_ex error decrypting authenticator.\n");
-		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
-		goto err;
-		}
-	outl += padl;
-	if (outl > unencbufsize)
-		{
-		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
-                        "Buffer overflow decrypting authenticator.\n");
-		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
-		goto err;
-		}
-	EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+
+        if (!EVP_CipherInit(&ciph_ctx,enc,kssl_ctx->key,iv,0))
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "EVP_CipherInit error decrypting authenticator.\n");
+                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+                goto err;
+                }
+        outl = dec_authent->cipher->length;
+        if (!EVP_Cipher(&ciph_ctx,unenc_authent,dec_authent->cipher->data,outl))
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "EVP_Cipher error decrypting authenticator.\n");
+                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+                goto err;
+                }
+        EVP_CIPHER_CTX_cleanup(&ciph_ctx);
 
 #ifdef KSSL_DEBUG
 	printf("kssl_check_authent: decrypted authenticator[%d] =\n", outl);
@@ -2115,6 +2095,7 @@ krb5_error_code  kssl_check_authent(
 	if (auth)		KRB5_AUTHENT_free((KRB5_AUTHENT *) auth);
 	if (dec_authent)	KRB5_ENCDATA_free(dec_authent);
 	if (unenc_authent)	free(unenc_authent);
+	EVP_CIPHER_CTX_cleanup(&ciph_ctx);
 	return krb5rc;
 	}