From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 3 May 2019 20:20:37 +0000 (+0200)
Subject: tftp: use the current blksize for recvfrom()
X-Git-Tag: curl-7_65_0~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2576003415625d7b5f0e390902f8097830b82275;p=curl

tftp: use the current blksize for recvfrom()

bug: https://curl.haxx.se/docs/CVE-2019-5436.html
Reported-by: l00p3r on hackerone
CVE-2019-5436
---

diff --git a/lib/tftp.c b/lib/tftp.c
index 8b92b7bd6..289cda282 100644
--- a/lib/tftp.c
+++ b/lib/tftp.c
@@ -1009,7 +1009,7 @@ static CURLcode tftp_connect(struct connectdata *conn, bool *done)
   state->sockfd = state->conn->sock[FIRSTSOCKET];
   state->state = TFTP_STATE_START;
   state->error = TFTP_ERR_NONE;
-  state->blksize = TFTP_BLKSIZE_DEFAULT;
+  state->blksize = blksize;
   state->requested_blksize = blksize;
 
   ((struct sockaddr *)&state->local_addr)->sa_family =