From dcc9f51cbd4ed622cfb0f9b1c141eb2ffe3b12f1 Mon Sep 17 00:00:00 2001
From: Quanah Gibson-Mount <quanah@symas.com>
Date: Tue, 18 Feb 2020 19:05:12 +0000
Subject: [PATCH] Fix #587

Off by one error in common.c, CVE-2019-19906.

Thanks to Stephan Zeisberg for reporting
---
 lib/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/common.c b/lib/common.c
index bc3bf1df..9969d6aa 100644
--- a/lib/common.c
+++ b/lib/common.c
@@ -190,7 +190,7 @@ int _sasl_add_string(char **out, size_t *alloclen,
 
   if (add==NULL) add = "(null)";
 
-  addlen=strlen(add); /* only compute once */
+  addlen=strlen(add)+1; /* only compute once */
   if (_buf_alloc(out, alloclen, (*outlen)+addlen)!=SASL_OK)
     return SASL_NOMEM;