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Fix bsc#1257041 (CVE-2025-15367)

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Add CVE-2025-15367-poplib-ctrl-chars.patch fixing bsc#1257041
(CVE-2025-15367) using gh#python/cpython!143924 and doing basically the
same as the previous patch for poplib library.
This commit is contained in:
Matej Cepl
2026-02-04 20:54:27 +01:00
parent 2725f9bae4
commit 8d5231e0bf
4 changed files with 63 additions and 0 deletions
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1
.gitignore vendored
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@@ -2,4 +2,5 @@
*.obscpio
_build.*
.pbuild
*.orig
python314-*-build/

56
CVE-2025-15367-poplib-ctrl-chars.patch Normal file
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@@ -0,0 +1,56 @@
From b6f733b285b1c4f27dacb5c2e1f292c914e8b933 Mon Sep 17 00:00:00 2001
From: Seth Michael Larson <seth@python.org>
Date: Fri, 16 Jan 2026 10:54:09 -0600
Subject: [PATCH 1/2] Add 'test.support' fixture for C0 control characters
---
Lib/poplib.py | 2 ++
Lib/test/test_poplib.py | 8 ++++++++
Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst | 1 +
3 files changed, 11 insertions(+)
Index: Python-3.14.2/Lib/poplib.py
===================================================================
--- Python-3.14.2.orig/Lib/poplib.py 2026-02-04 22:23:00.168506856 +0100
+++ Python-3.14.2/Lib/poplib.py 2026-02-04 22:23:04.642467762 +0100
@@ -122,6 +122,8 @@
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)
Index: Python-3.14.2/Lib/test/test_poplib.py
===================================================================
--- Python-3.14.2.orig/Lib/test/test_poplib.py 2026-02-04 22:23:01.857420849 +0100
+++ Python-3.14.2/Lib/test/test_poplib.py 2026-02-04 22:23:04.642886463 +0100
@@ -17,6 +17,7 @@
from test.support import threading_helper
from test.support import asynchat
from test.support import asyncore
+from test.support import control_characters_c0
test_support.requires_working_socket(module=True)
@@ -395,6 +396,13 @@
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()
Index: Python-3.14.2/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ Python-3.14.2/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst 2026-02-04 22:23:04.643241399 +0100
@@ -0,0 +1 @@
+Reject control characters in POP3 commands.

3
python314.changes
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@@ -9,6 +9,9 @@ Wed Feb 4 00:53:37 UTC 2026 - Matej Cepl <mcepl@cepl.eu>
(CVE-2026-0865) rejecting control characters in
wsgiref.headers.Headers, which could be abused for injecting
false HTTP headers.
- Add CVE-2025-15367-poplib-ctrl-chars.patch fixing bsc#1257041
(CVE-2025-15367) using gh#python/cpython!143924 and doing
basically the same as the previous patch for poplib library.
-------------------------------------------------------------------
Thu Jan 29 12:58:15 UTC 2026 - Matej Cepl <mcepl@cepl.eu>

3
python314.spec
View File

@@ -240,6 +240,9 @@ Patch49: CVE-2025-12781-b64decode-alt-chars.patch
# PATCH-FIX-UPSTREAM CVE-2026-0865-wsgiref-ctrl-chars.patch bsc#1257042 mcepl@suse.com
# Reject control characters in wsgiref.headers.Headers
Patch50: CVE-2026-0865-wsgiref-ctrl-chars.patch
# PATCH-FIX-UPSTREAM CVE-2025-15367-poplib-ctrl-chars.patch bsc#1257041 mcepl@suse.com
# Reject control characters in poplib
Patch51: CVE-2025-15367-poplib-ctrl-chars.patch
#### Python 3.14 END OF PATCHES
BuildRequires: autoconf-archive
BuildRequires: automake