curl/SOURCES/0049-curl-7.61.1-CVE-2023-27536.patch

From 9d6dd7bc1dea42ae8e710aeae714e2a2c290de61 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 10 Mar 2023 09:22:43 +0100
Subject: [PATCH] url: only reuse connections with same GSS delegation

Reported-by: Harry Sintonen
Closes #10731

Upstream-commit: cb49e67303dbafbab1cebf4086e3ec15b7d56ee5
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
 lib/url.c     | 6 ++++++
 lib/urldata.h | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/lib/url.c b/lib/url.c
index 3b11b7e..cbbc7f3 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -1305,6 +1305,11 @@ ConnectionExists(struct Curl_easy *data,
         }
       }
 
+      /* GSS delegation differences do not actually affect every connection
+         and auth method, but this check takes precaution before efficiency */
+      if(needle->gssapi_delegation != check->gssapi_delegation)
+        continue;
+
       if(needle->handler->protocol & (CURLPROTO_SCP|CURLPROTO_SFTP)) {
         if(!ssh_config_matches(needle, check))
           continue;
@@ -1949,6 +1954,7 @@ static struct connectdata *allocate_conn(struct Curl_easy *data)
      it may live on without (this specific) Curl_easy */
   conn->fclosesocket = data->set.fclosesocket;
   conn->closesocket_client = data->set.closesocket_client;
+  conn->gssapi_delegation = data->set.gssapi_delegation;
 
   return conn;
   error:
diff --git a/lib/urldata.h b/lib/urldata.h
index ce90304..9e16f26 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -856,6 +856,8 @@ struct connectdata {
   int httpversion;        /* the HTTP version*10 reported by the server */
   int rtspversion;        /* the RTSP version*10 reported by the server */
 
+  unsigned char gssapi_delegation; /* inherited from set.gssapi_delegation */
+
   struct curltime now;     /* "current" time */
   struct curltime created; /* creation time */
   curl_socket_t sock[2]; /* two sockets, the second is used for the data
-- 
2.39.2