Index: channels/sip/reqresp_parser.c
===================================================================
--- channels/sip/reqresp_parser.c	(revision 321535)
+++ channels/sip/reqresp_parser.c	(working copy)
@@ -42,6 +42,27 @@
 	char *c = NULL;
 	int error = 0;
 
+	/*
+	 * Initialize requested strings - some functions don't care if parse_uri fails
+	 * and will attempt to use string pointers passed into parse_uri even after a
+	 * parse_uri failure
+	 */
+	if (user) {
+		*user = "";
+	}
+	if (pass) {
+		*pass = "";
+	}
+	if (domain) {
+		*domain = "";
+	}
+	if (headers) {
+		*headers = "";
+	}
+	if (residue) {
+		*residue = "";
+	}
+
 	/* check for valid input */
 	if (ast_strlen_zero(uri)) {
 		return -1;