[4.2.x] Fixed CVE-2024-45230 -- Mitigated potential DoS in urlize and urlizetrunc template filters.

Thanks MProgrammer (https://hackerone.com/mprogrammer) for the report.

2 files changed, 23 insertions, 0 deletions

diff --git a/tests/template_tests/filter_tests/test_urlize.py b/tests/template_tests/filter_tests/test_urlize.py
index abc227ba6a..e542802aae 100644
--- a/tests/template_tests/filter_tests/test_urlize.py
+++ b/tests/template_tests/filter_tests/test_urlize.py
@@ -305,6 +305,28 @@ class FunctionTests(SimpleTestCase):
             "http://testing.com/example</a>.,:;)&quot;!",
         )
 
+    def test_trailing_semicolon(self):
+        self.assertEqual(
+            urlize("http://example.com?x=&amp;", autoescape=False),
+            '<a href="http://example.com?x=" rel="nofollow">'
+            "http://example.com?x=&amp;</a>",
+        )
+        self.assertEqual(
+            urlize("http://example.com?x=&amp;;", autoescape=False),
+            '<a href="http://example.com?x=" rel="nofollow">'
+            "http://example.com?x=&amp;</a>;",
+        )
+        self.assertEqual(
+            urlize("http://example.com?x=&amp;;;", autoescape=False),
+            '<a href="http://example.com?x=" rel="nofollow">'
+            "http://example.com?x=&amp;</a>;;",
+        )
+        self.assertEqual(
+            urlize("http://example.com?x=&amp.;...;", autoescape=False),
+            '<a href="http://example.com?x=" rel="nofollow">'
+            "http://example.com?x=&amp</a>.;...;",
+        )
+
     def test_brackets(self):
         """
         #19070 - Check urlize handles brackets properly
diff --git a/tests/utils_tests/test_html.py b/tests/utils_tests/test_html.py
index 83ebe4334b..7ff5020fb6 100644
--- a/tests/utils_tests/test_html.py
+++ b/tests/utils_tests/test_html.py
@@ -364,6 +364,7 @@ class TestUtilsHtml(SimpleTestCase):
             "&:" + ";" * 100_000,
             "&.;" * 100_000,
             ".;" * 100_000,
+            "&" + ";:" * 100_000,
         )
         for value in tests:
             with self.subTest(value=value):