{"id":"GHSA-8v9w-p43c-r885","revision":"739ee4411a054d08a49a2daacd197828","records":[{"revision":"739ee4411a054d08a49a2daacd197828","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-8v9w-p43c-r885","aliases":["CVE-2022-31100","RUSTSEC-2022-0031"],"title":"Reachable Assertion in rulex","description":"### Impact\nWhen parsing untrusted rulex expressions, rulex may crash, 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.\n\nThis is a security concern for you, if\n- your service parses untrusted rulex expressions (expressions provided by an untrusted user), and\n- your service becomes unavailable when the thread running rulex panics.\n\n### Patches\nThe crashes are fixed in version **0.4.3**. Affected users are advised to update to this version.\n\n### Workarounds\nYou can use `catch_unwind` to recover from panics.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [rulex](https://github.com/rulex-rs/rulex/issues)\n* Email me at [ludwig.stecher@gmx.de](mailto:ludwig.stecher@gmx.de)\n\n### Credits\n\nCredit for finding these bugs goes to\n\n- [cargo fuzz](https://github.com/rust-fuzz/cargo-fuzz) and [afl.rs](https://github.com/rust-fuzz/afl.rs)\n- [evanrichter](https://github.com/evanrichter)\n- [ForAllSecure Mayhem](https://forallsecure.com/)","state":0,"publishedAt":"2022-06-21T20:12:15+00:00","modifiedAt":"2023-11-08T04:09:26.020407+00:00","affected":[{"ecosystem":"crates.io","name":"rulex","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.4.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/rulex-rs/rulex/security/advisories/GHSA-8v9w-p43c-r885","https://nvd.nist.gov/vuln/detail/CVE-2022-31100","https://github.com/rulex-rs/rulex/commit/fac6d58b25c6f9f8c0a6cdc4dec75b37b219f1d6","https://github.com/rulex-rs/rulex","https://rustsec.org/advisories/RUSTSEC-2022-0031.html"],"sourceUrl":"https://github.com/advisories/GHSA-8v9w-p43c-r885","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-8v9w-p43c-r885","identifiers":["GHSA-8v9w-p43c-r885","CVE-2022-31100","RUSTSEC-2022-0031"]},"retained":false,"historicalAffected":[]}],"coverage":[]}