From d8899fbc190d49bb09c2576035d4db4ead185846 Mon Sep 17 00:00:00 2001
From: Alex Smith <aes7mv@virginia.edu>
Date: Thu, 15 Oct 2020 17:54:58 -0400
Subject: read: Add additional RESP3 nil validation

RESP3 nil should consist of "_\r\n" and nothing else.
---
 read.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/read.c b/read.c
index 34fce2e..57da853 100644
--- a/read.c
+++ b/read.c
@@ -320,6 +320,12 @@ static int processLineItem(redisReader *r) {
                 obj = (void*)REDIS_REPLY_DOUBLE;
             }
         } else if (cur->type == REDIS_REPLY_NIL) {
+            if (len != 0) {
+                __redisReaderSetError(r,REDIS_ERR_PROTOCOL,
+                        "Bad nil value");
+                return REDIS_ERR;
+            }
+
             if (r->fn && r->fn->createNil)
                 obj = r->fn->createNil(cur);
             else
-- 
cgit v1.2.3