Pillow/Tests/test_tiff_crashes.py
Eric Soroos 86f02f7c70 Fix negative size read in TiffDecode.c
* Caught by oss-fuzz runs
* CVE-2021-25290
2021-03-01 19:04:42 +11:00

50 lines
1.7 KiB
Python

# Reproductions/tests for crashes/read errors in TiffDecode.c
# When run in Python, all of these images should fail for
# one reason or another, either as a buffer overrun,
# unrecognized datastream, or truncated image file.
# There shouldn't be any segfaults.
#
# if run like
# `valgrind --tool=memcheck pytest test_tiff_crashes.py 2>&1 | grep TiffDecode.c`
# the output should be empty. There may be Python issues
# in the valgrind especially if run in a debug Python
# version.
import pytest
from PIL import Image
from .helper import on_ci
@pytest.mark.parametrize(
"test_file",
[
"Tests/images/crash_1.tif",
"Tests/images/crash_2.tif",
"Tests/images/crash-2020-10-test.tif",
"Tests/images/crash-0c7e0e8e11ce787078f00b5b0ca409a167f070e0.tif",
"Tests/images/crash-0e16d3bfb83be87356d026d66919deaefca44dac.tif",
"Tests/images/crash-1152ec2d1a1a71395b6f2ce6721c38924d025bf3.tif",
"Tests/images/crash-1185209cf7655b5aed8ae5e77784dfdd18ab59e9.tif",
"Tests/images/crash-338516dbd2f0e83caddb8ce256c22db3bd6dc40f.tif",
"Tests/images/crash-4f085cc12ece8cde18758d42608bed6a2a2cfb1c.tif",
"Tests/images/crash-86214e58da443d2b80820cff9677a38a33dcbbca.tif",
"Tests/images/crash-f46f5b2f43c370fe65706c11449f567ecc345e74.tif",
],
)
@pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
@pytest.mark.filterwarnings("ignore:Metadata warning")
def test_tiff_crashes(test_file):
try:
with Image.open(test_file) as im:
im.load()
except FileNotFoundError:
if not on_ci():
pytest.skip("test image not found")
return
raise
except OSError:
pass