mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-08 07:56:16 -05:00
f936a300b4
* gnu/packages/patches/python-CVE-2020-26116.patch: New file. * gnu/local.mk (dist_patch_DATA): Adjust accordingly. * gnu/packages/python.scm (python-3.8)[source](patches): Add it.
47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
Fix CVE-2020-26116:
|
|
|
|
https://cve.circl.lu/cve/CVE-2020-26116
|
|
https://bugs.python.org/issue39603
|
|
|
|
Taken from upstream (sans test and NEWS update):
|
|
https://github.com/python/cpython/commit/668d321476d974c4f51476b33aaca870272523bf
|
|
|
|
diff --git a/Lib/http/client.py b/Lib/http/client.py
|
|
--- a/Lib/http/client.py
|
|
+++ b/Lib/http/client.py
|
|
@@ -147,6 +147,10 @@
|
|
# _is_allowed_url_pchars_re = re.compile(r"^[/!$&'()*+,;=:@%a-zA-Z0-9._~-]+$")
|
|
# We are more lenient for assumed real world compatibility purposes.
|
|
|
|
+# These characters are not allowed within HTTP method names
|
|
+# to prevent http header injection.
|
|
+_contains_disallowed_method_pchar_re = re.compile('[\x00-\x1f]')
|
|
+
|
|
# We always set the Content-Length header for these methods because some
|
|
# servers will otherwise respond with a 411
|
|
_METHODS_EXPECTING_BODY = {'PATCH', 'POST', 'PUT'}
|
|
@@ -1087,6 +1091,8 @@ def putrequest(self, method, url, skip_host=False,
|
|
else:
|
|
raise CannotSendRequest(self.__state)
|
|
|
|
+ self._validate_method(method)
|
|
+
|
|
# Save the method for use later in the response phase
|
|
self._method = method
|
|
|
|
@@ -1177,6 +1183,15 @@ def _encode_request(self, request):
|
|
# ASCII also helps prevent CVE-2019-9740.
|
|
return request.encode('ascii')
|
|
|
|
+ def _validate_method(self, method):
|
|
+ """Validate a method name for putrequest."""
|
|
+ # prevent http header injection
|
|
+ match = _contains_disallowed_method_pchar_re.search(method)
|
|
+ if match:
|
|
+ raise ValueError(
|
|
+ f"method can't contain control characters. {method!r} "
|
|
+ f"(found at least {match.group()!r})")
|
|
+
|
|
def _validate_path(self, url):
|
|
"""Validate a url for putrequest."""
|
|
# Prevent CVE-2019-9740.
|