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ac125ee29a
As proposed in #240 and tracked in #414, this PR translates all advisories into the new "V3" advisory format, which is based on Markdown with leading TOML front matter. This format makes it easier to see rendered Markdown syntax descriptions, whether rendered by an IDE or GitHub. This should help with both crafting advisories initially as well as review, and ideally encourages more lengthy descriptions. Support for this format shipped in `cargo-audit` v0.12.0 on May 6th, 2020.
35 lines
920 B
Markdown
35 lines
920 B
Markdown
```toml
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[advisory]
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id = "RUSTSEC-2020-0009"
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package = "flatbuffers"
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date = "2020-04-11"
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url = "https://github.com/google/flatbuffers/issues/5825"
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[affected.functions]
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"flatbuffers::read_scalar" = [">= 0.4.0"]
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"flatbuffers::read_scalar_at" = [">= 0.4.0"]
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[versions]
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patched = []
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unaffected = ["< 0.4.0"]
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```
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# `read_scalar` and `read_scalar_at` allow transmuting values without `unsafe` blocks
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The `read_scalar` and `read_scalar_at` functions are unsound
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because they allow transmuting values without `unsafe` blocks.
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The following example shows how to create a dangling reference:
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```
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fn main() {
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#[derive(Copy, Clone, PartialEq, Debug)]
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struct S(&'static str);
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impl flatbuffers::EndianScalar for S {
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fn to_little_endian(self) -> Self { self }
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fn from_little_endian(self) -> Self { self }
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}
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println!("{:?}", flatbuffers::read_scalar::<S>(&[1; std::mem::size_of::<S>()]));
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}
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```
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