GHSA-v935-pqmr-g8v9

Source

https://github.com/advisories/GHSA-v935-pqmr-g8v9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/11/GHSA-v935-pqmr-g8v9/GHSA-v935-pqmr-g8v9.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-v935-pqmr-g8v9

Published

2021-11-03T17:36:04Z

Modified

2021-11-03T15:02:32Z

Summary

Unexpected panics in num-bigint

Details

Impact

Two scenarios were reported where BigInt and BigUint multiplication may unexpectedly panic.

The internal mac3 function did not expect the possibility of non-empty all-zero inputs, leading to an unwrap() panic.
A buffer was allocated with less capacity than needed for an intermediate result, leading to an assertion panic.

Rust panics can either cause stack unwinding or program abort, depending on the application configuration. In some settings, an unexpected panic may constitute a denial-of-service vulnerability.

Patches

Both problems were introduced in version 0.4.1, and are fixed in version 0.4.3.

For more information

If you have any questions or comments about this advisory, please open an issue in the num-bigint repo.

Acknowledgements

Thanks to Guido Vranken and Arvid Norberg for privately reporting these issues to the author.

References

Database specific

{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-131",
        "CWE-20"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-11-03T15:02:32Z"
}

References

Affected packages

crates.io / num-bigint

Package

Name: num-bigint; View open source insights on deps.dev
Purl: pkg:cargo/num-bigint

Affected ranges

Type: SEMVER
Events: Introduced

0.4.1

Fixed

0.4.3