RUSTSEC-2022-0031

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Source

https://rustsec.org/advisories/RUSTSEC-2022-0031

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2022-0031.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2022-0031

Aliases

Published

2022-05-21T12:00:00Z

Modified

2023-11-08T04:09:26.020407Z

Summary

Panic due to improper UTF-8 indexing

Details

When parsing untrusted rulex expressions, rulex may panic, possibly enabling a Denial of Service attack. This happens when the expression contains a multi- byte UTF-8 code point in a string literal or after a backslash, because rulex tries to slice into the code point and panics as a result.

The flaw was corrected in commits fac6d58b25 and 330b3534e7 by using len_utf8() to derive character width in bytes instead of assuming ASCII encoding of 1 byte per char.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / rulex

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.4.3

Ecosystem specific

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

Database specific

{
    "cvss": null,
    "informational": null,
    "categories": [
        "denial-of-service"
    ]
}