From 4058cf2a7f7e2590c26588c4eb476ac5c029cb5a Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 25 Sep 2018 07:49:35 +0200
Subject: http: fix memleak in rewind error path
If the rewind would fail, a strdup() would not get freed.
Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10665
Closes #3044
---
lib/http.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/lib/http.c b/lib/http.c
index 02ba13340..47e47193d 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -537,14 +537,6 @@ CURLcode Curl_http_auth_act(struct connectdata *conn)
}
if(pickhost || pickproxy) {
- /* In case this is GSS auth, the newurl field is already allocated so
- we must make sure to free it before allocating a new one. As figured
- out in bug #2284386 */
- Curl_safefree(data->req.newurl);
- data->req.newurl = strdup(data->change.url); /* clone URL */
- if(!data->req.newurl)
- return CURLE_OUT_OF_MEMORY;
-
if((data->set.httpreq != HTTPREQ_GET) &&
(data->set.httpreq != HTTPREQ_HEAD) &&
!conn->bits.rewindaftersend) {
@@ -552,6 +544,13 @@ CURLcode Curl_http_auth_act(struct connectdata *conn)
if(result)
return result;
}
+ /* In case this is GSS auth, the newurl field is already allocated so
+ we must make sure to free it before allocating a new one. As figured
+ out in bug #2284386 */
+ Curl_safefree(data->req.newurl);
+ data->req.newurl = strdup(data->change.url); /* clone URL */
+ if(!data->req.newurl)
+ return CURLE_OUT_OF_MEMORY;
}
else if((data->req.httpcode < 300) &&
(!data->state.authhost.done) &&
--
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