From: Tim Rühsen <tim.ruehsen@gmx.de>
Date: Sat, 3 Nov 2018 17:49:00 +0000 (+0100)
Subject: ftp: avoid two unsigned int overflows in FTP listing parser
X-Git-Tag: curl-7_63_0~79
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c05d77ee7dd23ebec68c3ef4012fb8febd78f8af;p=curl

ftp: avoid two unsigned int overflows in FTP listing parser

Curl_ftp_parselist: avoid unsigned integer overflows

The overflow has no real world impact, just avoid it for "best
practice".

Closes #3225
---

diff --git a/lib/ftplistparser.c b/lib/ftplistparser.c
index 249fe09c8..1b1de5c3c 100644
--- a/lib/ftplistparser.c
+++ b/lib/ftplistparser.c
@@ -405,7 +405,7 @@ size_t Curl_ftp_parselist(char *buffer, size_t size, size_t nmemb,
             parser->state.UNIX.main = PL_UNIX_FILETYPE;
             /* start FSM again not considering size of directory */
             finfo->b_used = 0;
-            i--;
+            continue;
           }
           break;
         case PL_UNIX_TOTALSIZE_READING: