CVE-2022-31099

Summary

rulex is a new, portable, regular expression language. 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. The crash is fixed in version 0.4.3. Affected users are advised to update to this version. There are no known workarounds for this issue.

Affected Software

Weaknesses

• CWE-674: CWE-674: Uncontrolled Recursion

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/rulex-rs/rulex/security/advisories/GHSA-v78m-2q7v-fjqp
• https://github.com/rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/rulex-rs/rulex/security/advisories/GHSA-v78m-2q7v-fjqp
• https://github.com/rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363

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