RUSTSEC-2020-0068

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Source

https://rustsec.org/advisories/RUSTSEC-2020-0068

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2020-0068.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2020-0068

Aliases

Published

2020-11-08T12:00:00Z

Modified

2023-11-08T04:03:38.796770Z

Severity

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

Summary

Unexpected panic in multihash `from_slice` parsing code

Details

In versions prior 0.11.3 it's possible to make from_slice panic by feeding it certain malformed input. It's never documented that from_slice (and from_bytes which wraps it) can panic, and its' return type (Result<Self, DecodeError>) suggests otherwise.

In practice, from_slice/from_bytes is frequently used in networking code (for example in rust-libp2p) and is being called with unsanitized data from untrusted sources. This can allow attackers to cause DoS by causing an unexpected panic in the network client's code.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / multihash

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.11.3

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [
            "multihash::digests::MultihashGeneric::from_bytes",
            "multihash::digests::MultihashRefGeneric::from_slice"
        ],
        "arch": []
    }
}

Database specific

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