Vulnerability Description
rulex is a new, portable, regular expression language. When 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. 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 thread running rulex panics. The crashes are fixed in version **0.4.3**. Affected users are advised to update to this version. The only known workaround for this issue is to assume that regular expression parsing will panic and to add logic to catch panics.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pomsky-Lang | Pomsky | < 0.4.3 |
Related Weaknesses (CWE)
References
- https://github.com/rulex-rs/rulex/commit/fac6d58b25c6f9f8c0a6cdc4dec75b37b219f1dPatchThird Party Advisory
- https://github.com/rulex-rs/rulex/security/advisories/GHSA-8v9w-p43c-r885MitigationThird Party Advisory
- https://github.com/rulex-rs/rulex/commit/fac6d58b25c6f9f8c0a6cdc4dec75b37b219f1dPatchThird Party Advisory
- https://github.com/rulex-rs/rulex/security/advisories/GHSA-8v9w-p43c-r885MitigationThird Party Advisory
FAQ
What is CVE-2022-31100?
CVE-2022-31100 is a vulnerability with a CVSS score of 6.5 (MEDIUM). rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, rulex may crash, possibly enabling a Denial of Service attack. This happens when the expression contain...
How severe is CVE-2022-31100?
CVE-2022-31100 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-31100?
Check the references section above for vendor advisories and patch information. Affected products include: Pomsky-Lang Pomsky.