File CVE-2023-49081.patch of Package python-aiohttp.31991

From 70756a76fab97769659ab344b588b27a5e37895b Mon Sep 17 00:00:00 2001
From: Sam Bull <git@sambull.org>
Date: Mon, 13 Nov 2023 22:36:04 +0000
Subject: [PATCH] Disallow arbitrary sequence types in version (#7835) (#7836)

(cherry picked from commit 1e86b777e61cf4eefc7d92fa57fa19dcc676013b)
---
 CHANGES/7835.bugfix          |  1 +
 aiohttp/client_reqrep.py     |  5 +++--
 tests/test_client_request.py | 20 +++++++++++++++++---
 3 files changed, 21 insertions(+), 5 deletions(-)
 create mode 100644 CHANGES/7835.bugfix

diff --git a/CHANGES/7835.bugfix b/CHANGES/7835.bugfix
new file mode 100644
index 00000000..4ce3af4f
--- /dev/null
+++ b/CHANGES/7835.bugfix
@@ -0,0 +1 @@
+Fixed arbitrary sequence types being allowed to inject headers via version parameter -- by :user:`Dreamsorcerer`
diff --git a/aiohttp/client_reqrep.py b/aiohttp/client_reqrep.py
index 48074534..8ccdc0d8 100644
--- a/aiohttp/client_reqrep.py
+++ b/aiohttp/client_reqrep.py
@@ -625,8 +625,9 @@ class ClientRequest:
             self.headers[hdrs.CONNECTION] = connection
 
         # status + headers
-        status_line = '{0} {1} HTTP/{2[0]}.{2[1]}'.format(
-            self.method, path, self.version)
+        status_line = '{0} {1} HTTP/{v.major}.{v.minor}'.format(
+            self.method, path, v=self.version
+        )
         await writer.write_headers(status_line, self.headers)
 
         self._writer = self.loop.create_task(self.write_bytes(writer, conn))
diff --git a/tests/test_client_request.py b/tests/test_client_request.py
index d6105ef9..0418e01f 100644
--- a/tests/test_client_request.py
+++ b/tests/test_client_request.py
@@ -22,6 +22,7 @@ from aiohttp.client_reqrep import (
     Fingerprint,
     _merge_ssl_params,
 )
+from aiohttp.http import HttpVersion
 from aiohttp.test_utils import make_mocked_coro
 
 
@@ -552,18 +553,18 @@ async def test_connection_header(loop, conn) -> None:
     req.headers.clear()
 
     req.keep_alive.return_value = True
-    req.version = (1, 1)
+    req.version = HttpVersion(1, 1)
     req.headers.clear()
     await req.send(conn)
     assert req.headers.get('CONNECTION') is None
 
-    req.version = (1, 0)
+    req.version = HttpVersion(1, 0)
     req.headers.clear()
     await req.send(conn)
     assert req.headers.get('CONNECTION') == 'keep-alive'
 
     req.keep_alive.return_value = False
-    req.version = (1, 1)
+    req.version = HttpVersion(1, 1)
     req.headers.clear()
     await req.send(conn)
     assert req.headers.get('CONNECTION') == 'close'
@@ -1152,6 +1153,19 @@ async def test_close_deprecated(loop, buf, conn) -> None:
     resp.close()
 
 
+async def test_bad_version(loop, conn) -> None:
+    req = ClientRequest(
+        "GET",
+        URL("http://python.org"),
+        loop=loop,
+        headers={"Connection": "Close"},
+        version=("1", "1\r\nInjected-Header: not allowed"),
+    )
+
+    with pytest.raises(AttributeError):
+        await req.send(conn)
+
+
 async def test_custom_response_class(loop, conn) -> None:
     class CustomResponse(ClientResponse):
         def read(self, decode=False):
-- 
2.43.0