1 files changed, 107 insertions, 0 deletions

diff --git a/meta-python/recipes-devtools/python/python3-django/CVE-2025-32873.patch b/meta-python/recipes-devtools/python/python3-django/CVE-2025-32873.patch
new file mode 100644
index 0000000000..701f9b5746
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python3-django/CVE-2025-32873.patch
@@ -0,0 +1,107 @@
+From 9cd8028f3e38dca8e51c1388f474eecbe7d6ca3c Mon Sep 17 00:00:00 2001
+From: Marc Deslauriers <marc.deslauriers@ubuntu.com>
+Date: Wed, 30 Apr 2025 10:34:27 -0400
+Subject: [PATCH] Fixed CVE-2025-32873 -- Mitigated potential DoS in
+ strip_tags().
+
+Thanks to Elias Myllymaki for the report, and Shai Berger and Jake
+Howard for the reviews.
+
+Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>
+
+Backport of 9f3419b519799d69f2aba70b9d25abe2e70d03e0 from main.
+
+CVE: CVE-2025-32873
+
+Upstream-Status: Backport
+https://github.com/django/django/commit/9cd8028f3e38dca8e51c1388f474eecbe7d6ca3c
+
+Signed-off-by: Saravanan <saravanan.kadambathursubramaniyam@windriver.com>
+---
+ django/utils/html.py           |  6 ++++++
+ docs/releases/2.2.28.txt       | 11 +++++++++++
+ tests/utils_tests/test_html.py | 15 ++++++++++++++-
+ 3 files changed, 31 insertions(+), 1 deletion(-)
+
+diff --git a/django/utils/html.py b/django/utils/html.py
+index 0d5ffd2..858a517 100644
+--- a/django/utils/html.py
++++ b/django/utils/html.py
+@@ -37,6 +37,9 @@ _html_escapes = {
+     ord("'"): '&#39;',
+ }
+ 
++# HTML tag that opens but has no closing ">" after 1k+ chars.
++long_open_tag_without_closing_re = _lazy_re_compile(r"<[a-zA-Z][^>]{1000,}")
++
+ 
+ @keep_lazy(str, SafeText)
+ def escape(text):
+@@ -188,6 +191,9 @@ def _strip_once(value):
+ def strip_tags(value):
+     """Return the given HTML with all tags stripped."""
+     value = str(value)
++    for long_open_tag in long_open_tag_without_closing_re.finditer(value):
++        if long_open_tag.group().count("<") >= MAX_STRIP_TAGS_DEPTH:
++            raise SuspiciousOperation
+     # Note: in typical case this loop executes _strip_once twice (the second
+     # execution does not remove any more tags).
+     strip_tags_depth = 0
+diff --git a/docs/releases/2.2.28.txt b/docs/releases/2.2.28.txt
+index 3503f38..1676bbd 100644
+--- a/docs/releases/2.2.28.txt
++++ b/docs/releases/2.2.28.txt
+@@ -143,3 +143,14 @@ directory-traversal via certain inputs when calling :meth:`save()
+ 
+ Built-in ``Storage`` sub-classes were not affected by this vulnerability.
+ 
++CVE-2025-32873: Denial-of-service possibility in ``strip_tags()``
++=================================================================
++
++:func:`~django.utils.html.strip_tags` would be slow to evaluate certain inputs
++containing large sequences of incomplete HTML tags. This function is used to
++implement the :tfilter:`striptags` template filter, which was thus also
++vulnerable.
++
++:func:`~django.utils.html.strip_tags` now raises a :exc:`.SuspiciousOperation`
++exception if it encounters an unusually large number of unclosed opening tags.
++
+diff --git a/tests/utils_tests/test_html.py b/tests/utils_tests/test_html.py
+index 2f412e1..653deb2 100644
+--- a/tests/utils_tests/test_html.py
++++ b/tests/utils_tests/test_html.py
+@@ -92,17 +92,30 @@ class TestUtilsHtml(SimpleTestCase):
+             ('><!' + ('&' * 16000) + 'D', '><!' + ('&' * 16000) + 'D'),
+             ('X<<<<br>br>br>br>X', 'XX'),
+             ("<" * 50 + "a>" * 50, ""),
++            (">" + "<a" * 500 + "a", ">" + "<a" * 500 + "a"),
++            ("<a" * 49 + "a" * 951, "<a" * 49 + "a" * 951),
++            ("<" + "a" * 1_002, "<" + "a" * 1_002),
+         )
+         for value, output in items:
+             with self.subTest(value=value, output=output):
+                 self.check_output(strip_tags, value, output)
+                 self.check_output(strip_tags, lazystr(value), output)
+ 
+-    def test_strip_tags_suspicious_operation(self):
++    def test_strip_tags_suspicious_operation_max_depth(self):
+         value = "<" * 51 + "a>" * 51, "<a>"
+         with self.assertRaises(SuspiciousOperation):
+             strip_tags(value)
+ 
++    def test_strip_tags_suspicious_operation_large_open_tags(self):
++        items = [
++            ">" + "<a" * 501,
++            "<a" * 50 + "a" * 950,
++        ]
++        for value in items:
++            with self.subTest(value=value):
++                with self.assertRaises(SuspiciousOperation):
++                    strip_tags(value)
++
+     def test_strip_tags_files(self):
+         # Test with more lengthy content (also catching performance regressions)
+         for filename in ('strip_tags1.html', 'strip_tags2.txt'):
+-- 
+2.40.0
+