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| author | Serhiy Storchaka <storchaka@gmail.com> | 2017-03-09 16:34:03 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@gmail.com> | 2017-03-09 16:34:03 (GMT) |
| commit | feccdb2a249a71be330765be77dee57121866779 (patch) | |
| tree | 003b97627283dc69d2611d4abbbf10217a99fdb1 | |
| parent | 964281af59d7a17d923c4d72357e48832b774e39 (diff) | |
| download | cpython-feccdb2a249a71be330765be77dee57121866779.zip cpython-feccdb2a249a71be330765be77dee57121866779.tar.gz cpython-feccdb2a249a71be330765be77dee57121866779.tar.bz2 | |
bpo-29774: Improve error reporting for corrupted extra field in ZIP file. (#583)
| -rw-r--r-- | Lib/zipfile.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Lib/zipfile.py b/Lib/zipfile.py index b5c16db..8a19ca2 100644 --- a/Lib/zipfile.py +++ b/Lib/zipfile.py @@ -438,7 +438,9 @@ class ZipInfo (object): unpack = struct.unpack while len(extra) >= 4: tp, ln = unpack('<HH', extra[:4]) - if tp == 1: + if ln+4 > len(extra): + raise BadZipFile("Corrupt extra field %04x (size=%d)" % (tp, ln)) + if tp == 0x0001: if ln >= 24: counts = unpack('<QQQ', extra[4:28]) elif ln == 16: |