62 lines
2.3 KiB
Diff
62 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Seth Michael Larson <seth@python.org>
|
|
Date: Tue, 20 Jan 2026 14:46:32 -0600
|
|
Subject: 00475: CVE-2025-15367
|
|
|
|
gh-143923: Reject control characters in POP3 commands
|
|
|
|
(cherry-picked from commit b234a2b67539f787e191d2ef19a7cbdce32874e7)
|
|
---
|
|
Lib/poplib.py | 2 ++
|
|
Lib/test/test_poplib.py | 8 ++++++++
|
|
.../2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst | 1 +
|
|
3 files changed, 11 insertions(+)
|
|
create mode 100644 Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
|
|
|
|
diff --git a/Lib/poplib.py b/Lib/poplib.py
|
|
index 9796f0d2f9..64690628fe 100644
|
|
--- a/Lib/poplib.py
|
|
+++ b/Lib/poplib.py
|
|
@@ -117,6 +117,8 @@ class POP3:
|
|
def _putcmd(self, line):
|
|
if self._debugging: print('*cmd*', repr(line))
|
|
line = bytes(line, self.encoding)
|
|
+ if re.search(b'[\x00-\x1F\x7F]', line):
|
|
+ raise ValueError('Control characters not allowed in commands')
|
|
self._putline(line)
|
|
|
|
|
|
diff --git a/Lib/test/test_poplib.py b/Lib/test/test_poplib.py
|
|
index 234c855545..18b8c191ab 100644
|
|
--- a/Lib/test/test_poplib.py
|
|
+++ b/Lib/test/test_poplib.py
|
|
@@ -12,6 +12,7 @@ import errno
|
|
|
|
from unittest import TestCase, skipUnless
|
|
from test import support as test_support
|
|
+from test.support import control_characters_c0
|
|
threading = test_support.import_module('threading')
|
|
|
|
HOST = test_support.HOST
|
|
@@ -349,6 +350,13 @@ class TestPOP3Class(TestCase):
|
|
self.assertIsNone(self.client.sock)
|
|
self.assertIsNone(self.client.file)
|
|
|
|
+ def test_control_characters(self):
|
|
+ for c0 in control_characters_c0():
|
|
+ with self.assertRaises(ValueError):
|
|
+ self.client.user(f'user{c0}')
|
|
+ with self.assertRaises(ValueError):
|
|
+ self.client.pass_(f'{c0}pass')
|
|
+
|
|
@requires_ssl
|
|
def test_stls_capa(self):
|
|
capa = self.client.capa()
|
|
diff --git a/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst b/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
|
|
new file mode 100644
|
|
index 0000000000..3cde4df3e0
|
|
--- /dev/null
|
|
+++ b/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
|
|
@@ -0,0 +1 @@
|
|
+Reject control characters in POP3 commands.
|