RUSTSEC-2020-0073

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Source

https://rustsec.org/advisories/RUSTSEC-2020-0073

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2020-0073.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2020-0073

Aliases

Published

2020-11-12T12:00:00Z

Modified

2023-11-08T04:03:39.222638Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Mutable reference with immutable provenance

Details

A mutable reference to a struct was constructed by dereferencing a pointer obtained from slice::as_ptr. Instead, slice::as_mut_ptr should have been called on the mutable slice argument. The former performs an implicit reborrow as an immutable shared reference which does not allow writing through the derived pointer.

There is no evidence for miscompilation, exploitable or otherwise, caused by this bug. Further investigation on Zulip suggests that the unoptimized generated LLVM IR does not contain any UB itself, effectively mitigating further effects.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / image

Package

Name: image; View open source insights on deps.dev
Purl: pkg:cargo/image

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.23.12

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [
            "image::Bgr::from_slice_mut",
            "image::Bgra::from_slice_mut",
            "image::Luma::from_slice_mut",
            "image::LumaA::from_slice_mut",
            "image::Rgb::from_slice_mut",
            "image::Rgba::from_slice_mut"
        ],
        "arch": []
    }
}

Database specific

{
    "cvss": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "informational": "unsound",
    "categories": []
}