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Code Issues 32 Releases Wiki Activity

[2.2.x] Fixed CVE-2019-6975 -- Fixed memory exhaustion in utils.numberformat.format().

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Thanks Sjoerd Job Postmus for the report and initial patch.
Thanks Michael Manfre, Tim Graham, and Florian Apolloner for review.

Backport of 402c0caa85 from master
This commit is contained in:
Carlton Gibson
2019-02-11 11:08:45 +01:00
parent b89d31d2dc
commit 83ab3e2664
5 changed files with 69 additions and 1 deletions
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19
tests/utils_tests/test_numberformat.py
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@@ -80,6 +80,25 @@ class TestNumberFormat(SimpleTestCase):
)
self.assertEqual(nformat(Decimal('3.'), '.'), '3')
self.assertEqual(nformat(Decimal('3.0'), '.'), '3.0')
# Very large & small numbers.
tests = [
('9e9999', None, '9e+9999'),
('9e9999', 3, '9.000e+9999'),
('9e201', None, '9e+201'),
('9e200', None, '9e+200'),
('1.2345e999', 2, '1.23e+999'),
('9e-999', None, '9e-999'),
('1e-7', 8, '0.00000010'),
('1e-8', 8, '0.00000001'),
('1e-9', 8, '0.00000000'),
('1e-10', 8, '0.00000000'),
('1e-11', 8, '0.00000000'),
('1' + ('0' * 300), 3, '1.000e+300'),
('0.{}1234'.format('0' * 299), 3, '1.234e-300'),
]
for value, decimal_pos, expected_value in tests:
with self.subTest(value=value):
self.assertEqual(nformat(Decimal(value), '.', decimal_pos), expected_value)
def test_decimal_subclass(self):
class EuroDecimal(Decimal):