RUSTSEC-2023-0005

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Source

https://rustsec.org/advisories/RUSTSEC-2023-0005

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2023-0005.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2023-0005

Aliases

GHSA-4q83-7cq4-p6wg

Published

2023-01-11T12:00:00Z

Modified

2023-11-08T04:15:17.465753Z

Summary

`tokio::io::ReadHalf<T>::unsplit` is Unsound

Details

tokio::io::ReadHalf<T>::unsplit can violate the Pin contract

The soundness issue is described in the tokio/issues#5372

Specific set of conditions needed to trigger an issue (a !Unpin type in ReadHalf) is unusual, combined with the difficulty of making any arbitrary use-after-free exploitable in Rust without doing a lot of careful alignment of data types in the surrounding code.

The tokio feature io-util is also required to be enabled to trigger this soundness issue.

Thanks to zachs18 reporting the issue to Tokio team responsibly and taiki-e and carllerche appropriately responding and fixing the soundness bug.

Tokio before 0.2.0 used futures 0.1 that did not have Pin, so it is not affected by this issue.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / tokio

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0.2.0

Fixed

1.18.5

Introduced

1.19.0

Fixed

1.20.4

Introduced

1.21.0

Fixed

1.24.2

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific

{
    "cvss": null,
    "informational": "unsound",
    "categories": [
        "memory-exposure"
    ]
}