CVE-2023-43646

Public Exploit
Inefficient Regular Expression Complexity in get-func-name

Description

get-func-name is a module to retrieve a function's name securely and consistently both in NodeJS and the browser. Versions prior to 2.0.1 are subject to a regular expression denial of service (redos) vulnerability which may lead to a denial of service when parsing malicious input. This vulnerability can be exploited when there is an imbalance in parentheses, which results in excessive backtracking and subsequently increases the CPU load and processing time significantly. This vulnerability can be triggered using the following input: '\t'.repeat(54773) + '\t/function/i'. This issue has been addressed in commit `f934b228b` which has been included in releases from 2.0.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.62%
Third-Party Advisory github.com
Affected: chaijs get-func-name
Published at:
Updated at:

References

Link Tags
https://github.com/chaijs/get-func-name/security/advisories/GHSA-4q6p-r6v2-jvc5 third party advisory exploit
https://github.com/chaijs/get-func-name/commit/f934b228b5e2cb94d6c8576d3aac05493f667c69 patch

Frequently Asked Questions

What is the severity of CVE-2023-43646?
CVE-2023-43646 has been scored as a high severity vulnerability.
How to fix CVE-2023-43646?
To fix CVE-2023-43646, 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-2023-43646 being actively exploited in the wild?
It is possible that CVE-2023-43646 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-43646?
CVE-2023-43646 affects chaijs get-func-name.
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