python-setuptools/SOURCES/CVE-2022-40897.patch

31 lines
1.0 KiB
Diff

diff --git a/setuptools/package_index.py b/setuptools/package_index.py
index b6407be..bdcf4a6 100755
--- a/setuptools/package_index.py
+++ b/setuptools/package_index.py
@@ -212,7 +212,7 @@ def unique_values(func):
return wrapper
-REL = re.compile(r"""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
+REL = re.compile(r"""<([^>]*\srel\s{0,10}=\s{0,10}['"]?([^'" >]+)[^>]*)>""", re.I)
# this line is here to fix emacs' cruddy broken syntax highlighting
diff --git a/setuptools/tests/test_packageindex.py b/setuptools/tests/test_packageindex.py
index 63b9294..49bd819 100644
--- a/setuptools/tests/test_packageindex.py
+++ b/setuptools/tests/test_packageindex.py
@@ -223,6 +223,12 @@ class TestPackageIndex:
assert dists[0].version == ''
assert dists[1].version == vc
+ def test_REL_DoS(self):
+ """
+ REL should not hang on a contrived attack string.
+ """
+ setuptools.package_index.REL.search('< rel=' + ' ' * 2**12)
+
class TestContentCheckers:
def test_md5(self):