CVE-2022-31099 – rulex

Package

Manager: cargo
Name: rulex
Vulnerable Version: >=0 <0.4.3

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00494 pctl0.6474

Details

Uncontrolled Recursion in rulex ### Impact When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if - your service parses untrusted rulex expressions (expressions provided by an untrusted user), and - your service becomes unavailable when the process running rulex aborts due to a stack overflow. ### Patches The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. ### Workarounds None. ### For more information If you have any questions or comments about this advisory: * Open an issue in [rulex](https://github.com/rulex-rs/rulex/issues) * Email me at [ludwig.stecher@gmx.de](mailto:ludwig.stecher@gmx.de) ### Credits Credit for finding these bugs goes to - [evanrichter](https://github.com/evanrichter) - [ForAllSecure Mayhem](https://forallsecure.com/) - [cargo fuzz](https://github.com/rust-fuzz/cargo-fuzz) and [afl.rs](https://github.com/rust-fuzz/afl.rs)

Metadata

Created: 2022-06-22T17:52:51Z
Modified: 2022-07-12T21:59:11Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-v78m-2q7v-fjqp/GHSA-v78m-2q7v-fjqp.json
CWE IDs: ["CWE-674"]
Alternative ID: GHSA-v78m-2q7v-fjqp
Finding: F067
Auto approve: 1