RUSTSEC-2020-0068

See a problem?

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.

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"
    ]
}