CVE-2022-31100 (GCVE-0-2022-31100)
Vulnerability from cvelistv5 – Published: 2022-06-27 22:10 – Updated: 2025-04-23 18:06
VLAI
EPSS
VEX
Title
Reachable Assertion in rulex
Summary
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 14:04 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rulex-rs/rulex/security/adviso… | x_refsource_CONFIRM |
| https://github.com/rulex-rs/rulex/commit/fac6d58b… | x_refsource_MISC |
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