From 5e4fd0533c99c75cb27137ab469e2ce1e3efaf72 Mon Sep 17 00:00:00 2001
From: "Heiko Schlittermann (HS12-RIPE)" <hs@schlittermann.de>
Date: Mon, 29 Mar 2021 22:44:47 +0200
Subject: [PATCH] CVE-2020-28013: Heap buffer overflow in parse_fix_phrase()

Based on Phil Pennock's 8a50c88a, done by Qualys

(cherry picked from commit 8161c16ec7320ac6164954bade23179a0ed095eb)
(cherry picked from commit 71585e8fcb8704a9f431f5a8d019280cccaad069)
---
 src/src/parse.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/src/parse.c b/src/src/parse.c
index cfc1f996f..e0470c86f 100644
--- a/src/src/parse.c
+++ b/src/src/parse.c
@@ -1134,12 +1134,7 @@ while (s < end)
             {
             if (ss >= end) ss--;
             *t++ = '(';
-            if (ss < s)
-              {
-              /* Someone has ended the string with "<punct>(". */
-              ss = s;
-              }
-            else
+            if (ss > s)
               {
               Ustrncpy(t, s, ss-s);
               t += ss-s;
-- 
2.30.2