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import UBI python2-2.7.18-17.module+el8.10.0+20822+a15ec22d

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This commit is contained in:
eabdullin 2024-05-22 13:49:35 +00:00
parent 697fd4c703
commit f929afe4eb
3 changed files with 260 additions and 1 deletions
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98
SOURCES/00406-cve-2022-48565.patch Normal file
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@ -0,0 +1,98 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ned Deily <nad@python.org>
Date: Fri, 6 Oct 2023 12:23:43 +0200
Subject: [PATCH] 00406-cve-2022-48565.patch
Reject XML entity declarations in plist files
CVE-2022-48565: XML External Entity in XML processing plistlib module
Backported from https://github.com/python/cpython/commit/a158fb9c5138
Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-48565
Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
Co-authored-by: Lumir Balhar <lbalhar@redhat.com>
---
Lib/plistlib.py | 12 ++++++++++++
Lib/test/test_plistlib.py | 18 ++++++++++++++++++
.../2020-10-19-10-56-27.bpo-42051.EU_B7u.rst | 3 +++
3 files changed, 33 insertions(+)
create mode 100644 Misc/NEWS.d/next/Security/2020-10-19-10-56-27.bpo-42051.EU_B7u.rst
diff --git a/Lib/plistlib.py b/Lib/plistlib.py
index 42897b8da8b..73fca1d4714 100644
--- a/Lib/plistlib.py
+++ b/Lib/plistlib.py
@@ -390,6 +390,11 @@ class Data:
return "%s(%s)" % (self.__class__.__name__, repr(self.data))
+class InvalidFileException (ValueError):
+ def __init__(self, message="Invalid file"):
+ ValueError.__init__(self, message)
+
+
class PlistParser:
def __init__(self):
@@ -403,9 +408,16 @@ class PlistParser:
parser.StartElementHandler = self.handleBeginElement
parser.EndElementHandler = self.handleEndElement
parser.CharacterDataHandler = self.handleData
+ parser.EntityDeclHandler = self.handle_entity_decl
parser.ParseFile(fileobj)
return self.root
+ def handle_entity_decl(self, entity_name, is_parameter_entity, value, base, system_id, public_id, notation_name):
+ # Reject plist files with entity declarations to avoid XML vulnerabilies in expat.
+ # Regular plist files don't contain those declerations, and Apple's plutil tool does not
+ # accept them either.
+ raise InvalidFileException("XML entity declarations are not supported in plist files")
+
def handleBeginElement(self, element, attrs):
self.data = []
handler = getattr(self, "begin_" + element, None)
diff --git a/Lib/test/test_plistlib.py b/Lib/test/test_plistlib.py
index 7859ad05723..bcdae924d91 100644
--- a/Lib/test/test_plistlib.py
+++ b/Lib/test/test_plistlib.py
@@ -86,6 +86,19 @@ TESTDATA = """<?xml version="1.0" encoding="UTF-8"?>
</plist>
""".replace(" " * 8, "\t") # Apple as well as plistlib.py output hard tabs
+XML_PLIST_WITH_ENTITY=b'''\
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd" [
+ <!ENTITY entity "replacement text">
+ ]>
+<plist version="1.0">
+ <dict>
+ <key>A</key>
+ <string>&entity;</string>
+ </dict>
+</plist>
+'''
+
class TestPlistlib(unittest.TestCase):
@@ -195,6 +208,11 @@ class TestPlistlib(unittest.TestCase):
self.assertEqual(test1, result1)
self.assertEqual(test2, result2)
+ def test_xml_plist_with_entity_decl(self):
+ with self.assertRaisesRegexp(plistlib.InvalidFileException,
+ "XML entity declarations are not supported"):
+ plistlib.readPlistFromString(XML_PLIST_WITH_ENTITY)
+
def test_main():
test_support.run_unittest(TestPlistlib)
diff --git a/Misc/NEWS.d/next/Security/2020-10-19-10-56-27.bpo-42051.EU_B7u.rst b/Misc/NEWS.d/next/Security/2020-10-19-10-56-27.bpo-42051.EU_B7u.rst
new file mode 100644
index 00000000000..31b44b229f6
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2020-10-19-10-56-27.bpo-42051.EU_B7u.rst
@@ -0,0 +1,3 @@
+The :mod:`plistlib` module no longer accepts entity declarations in XML
+plist files to avoid XML vulnerabilities. This should not affect users as
+entity declarations are not used in regular plist files.
\ No newline at end of file

136
SOURCES/00408-cve-2022-48560.patch Normal file
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@ -0,0 +1,136 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lumir Balhar <lbalhar@redhat.com>
Date: Thu, 23 Nov 2023 13:25:44 +0100
Subject: [PATCH] 00408-cve-2022-48560.patch
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Security fix for CVE-2022-48560: python3: use after free in heappushpop()
of heapq module
Resolved upstream: https://github.com/python/cpython/issues/83602
Backported from Python 3.6.11.
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Co-authored-by: Lumír Balhar <lbalhar@redhat.com>
---
Lib/test/test_heapq.py | 32 ++++++++++++++++++++++++++++++++
Modules/_heapqmodule.c | 31 ++++++++++++++++++++++++-------
2 files changed, 56 insertions(+), 7 deletions(-)
diff --git a/Lib/test/test_heapq.py b/Lib/test/test_heapq.py
index c4de593bb82..29cefb5d1a6 100644
--- a/Lib/test/test_heapq.py
+++ b/Lib/test/test_heapq.py
@@ -396,6 +396,38 @@ class TestErrorHandling(TestCase):
with self.assertRaises((IndexError, RuntimeError)):
self.module.heappop(heap)
+ def test_comparison_operator_modifiying_heap(self):
+ # See bpo-39421: Strong references need to be taken
+ # when comparing objects as they can alter the heap
+ class EvilClass(int):
+ def __lt__(self, o):
+ heap[:] = []
+ return NotImplemented
+
+ heap = []
+ self.module.heappush(heap, EvilClass(0))
+ self.assertRaises(IndexError, self.module.heappushpop, heap, 1)
+
+ def test_comparison_operator_modifiying_heap_two_heaps(self):
+
+ class h(int):
+ def __lt__(self, o):
+ list2[:] = []
+ return NotImplemented
+
+ class g(int):
+ def __lt__(self, o):
+ list1[:] = []
+ return NotImplemented
+
+ list1, list2 = [], []
+
+ self.module.heappush(list1, h(0))
+ self.module.heappush(list2, g(0))
+
+ self.assertRaises((IndexError, RuntimeError), self.module.heappush, list1, g(1))
+ self.assertRaises((IndexError, RuntimeError), self.module.heappush, list2, h(1))
+
class TestErrorHandlingPython(TestErrorHandling):
module = py_heapq
diff --git a/Modules/_heapqmodule.c b/Modules/_heapqmodule.c
index 5b0ef691545..c013aee1ebf 100644
--- a/Modules/_heapqmodule.c
+++ b/Modules/_heapqmodule.c
@@ -52,7 +52,11 @@ _siftdown(PyListObject *heap, Py_ssize_t startpos, Py_ssize_t pos)
while (pos > startpos) {
parentpos = (pos - 1) >> 1;
parent = PyList_GET_ITEM(heap, parentpos);
+ Py_INCREF(newitem);
+ Py_INCREF(parent);
cmp = cmp_lt(newitem, parent);
+ Py_DECREF(parent);
+ Py_DECREF(newitem);
if (cmp == -1)
return -1;
if (size != PyList_GET_SIZE(heap)) {
@@ -93,9 +97,13 @@ _siftup(PyListObject *heap, Py_ssize_t pos)
childpos = 2*pos + 1; /* leftmost child position */
rightpos = childpos + 1;
if (rightpos < endpos) {
- cmp = cmp_lt(
- PyList_GET_ITEM(heap, childpos),
- PyList_GET_ITEM(heap, rightpos));
+ PyObject* a = PyList_GET_ITEM(heap, childpos);
+ PyObject* b = PyList_GET_ITEM(heap, rightpos);
+ Py_INCREF(a);
+ Py_INCREF(b);
+ cmp = cmp_lt(a, b);
+ Py_DECREF(a);
+ Py_DECREF(b);
if (cmp == -1)
return -1;
if (cmp == 0)
@@ -236,7 +244,10 @@ heappushpop(PyObject *self, PyObject *args)
return item;
}
- cmp = cmp_lt(PyList_GET_ITEM(heap, 0), item);
+ PyObject* top = PyList_GET_ITEM(heap, 0);
+ Py_INCREF(top);
+ cmp = cmp_lt(top, item);
+ Py_DECREF(top);
if (cmp == -1)
return NULL;
if (cmp == 0) {
@@ -395,7 +406,9 @@ _siftdownmax(PyListObject *heap, Py_ssize_t startpos, Py_ssize_t pos)
while (pos > startpos){
parentpos = (pos - 1) >> 1;
parent = PyList_GET_ITEM(heap, parentpos);
+ Py_INCREF(parent);
cmp = cmp_lt(parent, newitem);
+ Py_DECREF(parent);
if (cmp == -1) {
Py_DECREF(newitem);
return -1;
@@ -436,9 +449,13 @@ _siftupmax(PyListObject *heap, Py_ssize_t pos)
childpos = 2*pos + 1; /* leftmost child position */
rightpos = childpos + 1;
if (rightpos < endpos) {
- cmp = cmp_lt(
- PyList_GET_ITEM(heap, rightpos),
- PyList_GET_ITEM(heap, childpos));
+ PyObject* a = PyList_GET_ITEM(heap, rightpos);
+ PyObject* b = PyList_GET_ITEM(heap, childpos);
+ Py_INCREF(a);
+ Py_INCREF(b);
+ cmp = cmp_lt(a, b);
+ Py_DECREF(a);
+ Py_DECREF(b);
if (cmp == -1) {
Py_DECREF(newitem);
return -1;

27
SPECS/python2.spec
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@ -104,7 +104,7 @@ Summary: An interpreted, interactive, object-oriented programming language
Name: %{python}
# Remember to also rebase python2-docs when changing this:
Version: 2.7.18
Release: 15%{?dist}
Release: 17%{?dist}
License: Python
Group: Development/Languages
Requires: %{python}-libs%{?_isa} = %{version}-%{release}
@ -838,6 +838,21 @@ Patch399: 00399-cve-2023-24329.patch
# Backported from Python 3.8
Patch404: 00404-cve-2023-40217.patch
# 00406 # 33d46d8ceb68210f6234f26f3465c8556c0b6ccb
# Reject XML entity declarations in plist files
# CVE-2022-48565: XML External Entity in XML processing plistlib module
# Backported from https://github.com/python/cpython/commit/a158fb9c5138
# Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-48565
Patch406: 00406-cve-2022-48565.patch
# 00408 # 7cfb7e151bb64b384c47bfe0dddf5c2d6837772f
# Security fix for CVE-2022-48560: python3: use after free in heappushpop()
# of heapq module
# Resolved upstream: https://github.com/python/cpython/issues/83602
#
# Backported from Python 3.6.11.
Patch408: 00408-cve-2022-48560.patch
# (New patches go here ^^^)
#
# When adding new patches to "python2" and "python3" in Fedora, EL, etc.,
@ -1176,6 +1191,8 @@ git apply %{PATCH351}
%patch394 -p1
%patch399 -p1
%patch404 -p1
%patch406 -p1
%patch408 -p1
# This shouldn't be necesarry, but is right now (2.2a3)
@ -2115,6 +2132,14 @@ fi
# ======================================================
%changelog
* Thu Nov 30 2023 Lumír Balhar <lbalhar@redhat.com> - 2.7.18-17
- Security fix for CVE-2022-48560
Resolves: RHEL-16702
* Thu Oct 12 2023 Lumír Balhar <lbalhar@redhat.com> - 2.7.18-16
- Fix for CVE-2022-48565
Resolves: RHEL-7088
* Wed Sep 27 2023 Charalampos Stratakis <cstratak@redhat.com> - 2.7.18-15
- Security fix for CVE-2023-40217
Resolves: RHEL-9621