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| author | Jason R. Coombs <jaraco@jaraco.com> | 2022-01-23 15:17:41 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-01-23 15:17:41 (GMT) |
| commit | 1514d1252f96e6a83eb65c439522a6b5443f6a1a (patch) | |
| tree | 06c07df4577e985e9ac8797efcb2315645637222 | |
| parent | d0852c447aae650b665aaad61d914a1dc4d7ad96 (diff) | |
| download | cpython-1514d1252f96e6a83eb65c439522a6b5443f6a1a.zip cpython-1514d1252f96e6a83eb65c439522a6b5443f6a1a.tar.gz cpython-1514d1252f96e6a83eb65c439522a6b5443f6a1a.tar.bz2 | |
[3.9] bpo-46474: Avoid REDoS in EntryPoint.pattern (sync with importlib_metadata 4.10.1) (GH-30803). (GH-30828)
(cherry picked from commit 51c3e28c8a163e58dc753765e3cc51d5a717e70d)
Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>
| -rw-r--r-- | Lib/importlib/metadata.py | 4 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2022-01-22-14-49-10.bpo-46474.eKQhvx.rst | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/Lib/importlib/metadata.py b/Lib/importlib/metadata.py index 594986c..7b8038f 100644 --- a/Lib/importlib/metadata.py +++ b/Lib/importlib/metadata.py @@ -49,8 +49,8 @@ class EntryPoint( pattern = re.compile( r'(?P<module>[\w.]+)\s*' - r'(:\s*(?P<attr>[\w.]+))?\s*' - r'(?P<extras>\[.*\])?\s*$' + r'(:\s*(?P<attr>[\w.]+)\s*)?' + r'((?P<extras>\[.*\])\s*)?$' ) """ A regular expression describing the syntax for an entry point, diff --git a/Misc/NEWS.d/next/Library/2022-01-22-14-49-10.bpo-46474.eKQhvx.rst b/Misc/NEWS.d/next/Library/2022-01-22-14-49-10.bpo-46474.eKQhvx.rst new file mode 100644 index 0000000..156b7de --- /dev/null +++ b/Misc/NEWS.d/next/Library/2022-01-22-14-49-10.bpo-46474.eKQhvx.rst @@ -0,0 +1,2 @@ +In ``importlib.metadata.EntryPoint.pattern``, avoid potential REDoS by +limiting ambiguity in consecutive whitespace. |