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Security fix for CVE-2025-0938

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Resolves: RHEL-77263
This commit is contained in:
Charalampos Stratakis 2025-02-10 23:59:20 +01:00
parent 3c51cd412a
commit 15edd5d841
2 changed files with 128 additions and 1 deletions
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119
00450-cve-2025-0938-disallow-square-brackets-and-in-domain-names-for-parsed-urls.patch Normal file
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@ -0,0 +1,119 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Seth Michael Larson <seth@python.org>
Date: Fri, 31 Jan 2025 11:41:34 -0600
Subject: [PATCH] 00450: CVE-2025-0938: Disallow square brackets ([ and ]) in
domain names for parsed URLs
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
---
Lib/test/test_urlparse.py | 37 ++++++++++++++++++-
Lib/urllib/parse.py | 20 +++++++++-
...-01-28-14-08-03.gh-issue-105704.EnhHxu.rst | 4 ++
3 files changed, 58 insertions(+), 3 deletions(-)
create mode 100644 Misc/NEWS.d/next/Security/2025-01-28-14-08-03.gh-issue-105704.EnhHxu.rst
diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index 6f7d40c212..083d08b22e 100644
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -1146,16 +1146,51 @@ class UrlParseTestCase(unittest.TestCase):
self.assertRaises(ValueError, urllib.parse.urlsplit, 'Scheme://user@[0439:23af::2309::fae7:1234]/Path?Query')
self.assertRaises(ValueError, urllib.parse.urlsplit, 'Scheme://user@[0439:23af:2309::fae7:1234:2342:438e:192.0.2.146]/Path?Query')
self.assertRaises(ValueError, urllib.parse.urlsplit, 'Scheme://user@]v6a.ip[/Path')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[v6a.ip]')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[v6a.ip].suffix')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[v6a.ip]/')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[v6a.ip].suffix/')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[v6a.ip]?')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[v6a.ip].suffix?')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]/')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix/')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]?')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix?')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]:a')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix:a')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]:a1')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix:a1')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]:1a')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix:1a')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]:')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[::1].suffix:/')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[::1]:?')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://user@prefix.[v6a.ip]')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://user@[v6a.ip].suffix')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://[v6a.ip')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://v6a.ip]')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://]v6a.ip[')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://]v6a.ip')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://v6a.ip[')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix.[v6a.ip')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://v6a.ip].suffix')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix]v6a.ip[suffix')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://prefix]v6a.ip')
+ self.assertRaises(ValueError, urllib.parse.urlsplit, 'scheme://v6a.ip[suffix')
def test_splitting_bracketed_hosts(self):
- p1 = urllib.parse.urlsplit('scheme://user@[v6a.ip]/path?query')
+ p1 = urllib.parse.urlsplit('scheme://user@[v6a.ip]:1234/path?query')
self.assertEqual(p1.hostname, 'v6a.ip')
self.assertEqual(p1.username, 'user')
self.assertEqual(p1.path, '/path')
+ self.assertEqual(p1.port, 1234)
p2 = urllib.parse.urlsplit('scheme://user@[0439:23af:2309::fae7%test]/path?query')
self.assertEqual(p2.hostname, '0439:23af:2309::fae7%test')
self.assertEqual(p2.username, 'user')
self.assertEqual(p2.path, '/path')
+ self.assertIs(p2.port, None)
p3 = urllib.parse.urlsplit('scheme://user@[0439:23af:2309::fae7:1234:192.0.2.146%test]/path?query')
self.assertEqual(p3.hostname, '0439:23af:2309::fae7:1234:192.0.2.146%test')
self.assertEqual(p3.username, 'user')
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 9d37dcaa90..fb8f7f1ea8 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -443,6 +443,23 @@ def _checknetloc(netloc):
raise ValueError("netloc '" + netloc + "' contains invalid " +
"characters under NFKC normalization")
+def _check_bracketed_netloc(netloc):
+ # Note that this function must mirror the splitting
+ # done in NetlocResultMixins._hostinfo().
+ hostname_and_port = netloc.rpartition('@')[2]
+ before_bracket, have_open_br, bracketed = hostname_and_port.partition('[')
+ if have_open_br:
+ # No data is allowed before a bracket.
+ if before_bracket:
+ raise ValueError("Invalid IPv6 URL")
+ hostname, _, port = bracketed.partition(']')
+ # No data is allowed after the bracket but before the port delimiter.
+ if port and not port.startswith(":"):
+ raise ValueError("Invalid IPv6 URL")
+ else:
+ hostname, _, port = hostname_and_port.partition(':')
+ _check_bracketed_host(hostname)
+
# Valid bracketed hosts are defined in
# https://www.rfc-editor.org/rfc/rfc3986#page-49 and https://url.spec.whatwg.org/
def _check_bracketed_host(hostname):
@@ -506,8 +523,7 @@ def urlsplit(url, scheme='', allow_fragments=True):
(']' in netloc and '[' not in netloc)):
raise ValueError("Invalid IPv6 URL")
if '[' in netloc and ']' in netloc:
- bracketed_host = netloc.partition('[')[2].partition(']')[0]
- _check_bracketed_host(bracketed_host)
+ _check_bracketed_netloc(netloc)
if allow_fragments and '#' in url:
url, fragment = url.split('#', 1)
if '?' in url:
diff --git a/Misc/NEWS.d/next/Security/2025-01-28-14-08-03.gh-issue-105704.EnhHxu.rst b/Misc/NEWS.d/next/Security/2025-01-28-14-08-03.gh-issue-105704.EnhHxu.rst
new file mode 100644
index 0000000000..bff1bc6b0d
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2025-01-28-14-08-03.gh-issue-105704.EnhHxu.rst
@@ -0,0 +1,4 @@
+When using :func:`urllib.parse.urlsplit` and :func:`urllib.parse.urlparse` host
+parsing would not reject domain names containing square brackets (``[`` and
+``]``). Square brackets are only valid for IPv6 and IPvFuture hosts according to
+`RFC 3986 Section 3.2.2 <https://www.rfc-editor.org/rfc/rfc3986#section-3.2.2>`__.

10
python3.9.spec
View File

@ -17,7 +17,7 @@ URL: https://www.python.org/
#global prerel ...
%global upstream_version %{general_version}%{?prerel}
Version: %{general_version}%{?prerel:~%{prerel}}
Release: 1%{?dist}
Release: 2%{?dist}
License: Python
@ -437,6 +437,10 @@ Patch415: 00415-cve-2023-27043-gh-102988-reject-malformed-addresses-in-email-par
# CVE-2023-52425. Future versions of Expat may be more reactive.
Patch422: 00422-fix-tests-for-xmlpullparser-with-expat-2-6-0.patch
# 00450 # 4ab8663661748eb994c09e4ae89f59eb84c5d3ea
# CVE-2025-0938: Disallow square brackets ([ and ]) in domain names for parsed URLs
Patch450: 00450-cve-2025-0938-disallow-square-brackets-and-in-domain-names-for-parsed-urls.patch
# (New patches go here ^^^)
#
# When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@ -1841,6 +1845,10 @@ CheckPython optimized
# ======================================================
%changelog
* Mon Feb 10 2025 Charalampos Stratakis <cstratak@redhat.com> - 3.9.21-2
- Security fix for CVE-2025-0938
Resolves: RHEL-77263
* Wed Dec 04 2024 Tomáš Hrnčiar <thrnciar@redhat.com> - 3.9.21-1
- Update to 3.9.21
- Security fix for CVE-2024-11168 and CVE-2024-9287