fixing by adding max index computation in bitfield validation #1344
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laudiacay
requested review from
connormullett,
ec2,
elmattic and
noot
as code owners
elmattic
requested changes
Jan 5, 2022
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You could also add the offensive payload from Alex in a test:
#[test]
fn iter_last() {
// Create RLE with 2**64-2 set bits:
let rle: Vec<u8> = vec![0xE4, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x2F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F];
let (_bf, max) = BitField::from_bytes_with_max(&rle).unwrap();
assert_eq!(max, 18446744073709551614);
}
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idk how to close ur requested changes but... addressed! |
elmattic
reviewed
Jan 11, 2022
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| #[allow(clippy::absurd_extreme_comparisons)] | ||
| if last_sector_number > MAX_SECTOR_NUMBER { | ||
| if (last_sector_number as u64) > MAX_SECTOR_NUMBER { |
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You can have kept the type alias SectorNumber here. But otherwise lgtm.
elmattic
approved these changes
Jan 11, 2022
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@laudiacay could you merge main into this when you get a chance? the clippy issues were fixed on main |
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Stebalien
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Mar 11, 2022
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Summary of changes
Changes introduced in this pull request:
Reference issue to close (if applicable)
no relevant issue
Other information and links
See audit slack channel. ready to review, but please please look over this closely! bitfields are easy places to mess up...