From 1cc2182bcc81e185c14837e659d12b268cb99d63 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Tue, 1 Jan 2019 17:15:20 -0800
Subject: [PATCH] Fix bug #77380  (Global out of bounds read in xmlrpc base64
 code)

---
diff --git a/ext/xmlrpc/libxmlrpc/base64.c b/ext/xmlrpc/libxmlrpc/base64.c
index 5ebdf31..a4fa193 100644
--- a/ext/xmlrpc/libxmlrpc/base64.c
+++ b/ext/xmlrpc/libxmlrpc/base64.c
@@ -169,7 +169,7 @@ void base64_decode_xmlrpc(struct buffer_st *bfr, const char *source, int length)
 		return;
 	    }
 
-	    if (dtable[c] & 0x80) {
+	    if (dtable[(unsigned char)c] & 0x80) {
 	      /*
 	      fprintf(stderr, "Offset %i length %i\n", offset, length);
 	      fprintf(stderr, "character '%c:%x:%c' in input file.\n", c, c, dtable[c]);
-- 
2.1.4