CVE-2022-31099

Uncontrolled Recursion in rulex

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: rulex-rs rulex
Published at:
Updated at:

References

Link Tags
https://github.com/rulex-rs/rulex/security/advisories/GHSA-v78m-2q7v-fjqp third party advisory
https://github.com/rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-31099?
CVE-2022-31099 has been scored as a medium severity vulnerability.
How to fix CVE-2022-31099?
To fix CVE-2022-31099, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31099 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-31099 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31099?
CVE-2022-31099 affects rulex-rs rulex.
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