Adding metadata

1 files changed, 34 insertions, 0 deletions

diff --git a/dev-python/rencode/files/rencode-1.0.6-fix-CVE-2021-40839.patch b/dev-python/rencode/files/rencode-1.0.6-fix-CVE-2021-40839.patch
new file mode 100644
index 000000000000..0a997d408017
--- /dev/null
+++ b/dev-python/rencode/files/rencode-1.0.6-fix-CVE-2021-40839.patch
@@ -0,0 +1,34 @@
+From: Andrew Resch <andrewresch@gmail.com>
+Date: Mon, 9 Aug 2021 20:44:51 -0700
+Subject: [PATCH] Fix checking if typecode is valid while decoding.
+
+This bug will cause rencode to hang if the invalid typecode is included
+in a sequence type (list, dict) since the position will not change and
+the loop checking for the termination byte never returns.
+
+This change is a copy of PR #29 with a few aesthetic changes.
+
+--- a/rencode/rencode.pyx
++++ b/rencode/rencode.pyx
+@@ -527,6 +527,8 @@
+         return decode_fixed_dict(data, pos)
+     elif typecode == CHR_DICT:
+         return decode_dict(data, pos)
++    else:
++        raise ValueError("Invalid typecode: %d at pos: %d" % (typecode, pos[0]))
+ 
+ def loads(data, decode_utf8=False):
+     """
+--- a/tests/test_rencode.py
++++ b/tests/test_rencode.py
+@@ -223,5 +223,10 @@
+         assert rencode_orig.__version__
+         self.assertEqual(rencode.__version__[1:], rencode_orig.__version__[1:], "version number does not match")
+ 
++    def test_invalid_typecode(self):
++        s = b";\x2f\x7f"
++        with self.assertRaises(ValueError):
++            rencode.loads(s)
++
+ if __name__ == '__main__':
+     unittest.main()