CVE-2022-21680 – marked

Package

Manager: npm
Name: marked
Vulnerable Version: >=0 <4.0.10

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.0049 pctl0.64574

Details

Inefficient Regular Expression Complexity in marked ### Impact _What kind of vulnerability is it?_ Denial of service. The regular expression `block.def` may cause catastrophic backtracking against some strings. PoC is the following. ```javascript import * as marked from "marked"; marked.parse(`[x]:${' '.repeat(1500)}x ${' '.repeat(1500)} x`); ``` _Who is impacted?_ Anyone who runs untrusted markdown through marked and does not use a worker with a time limit. ### Patches _Has the problem been patched?_ Yes _What versions should users upgrade to?_ 4.0.10 ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ Do not run untrusted markdown through marked or run marked on a [worker](https://marked.js.org/using_advanced#workers) thread and set a reasonable time limit to prevent draining resources. ### References _Are there any links users can visit to find out more?_ - https://marked.js.org/using_advanced#workers - https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS ### For more information If you have any questions or comments about this advisory: * Open an issue in [marked](https://github.com/markedjs/marked)

Metadata

Created: 2022-01-14T21:04:41Z
Modified: 2022-01-14T19:56:20Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-rrrm-qjm4-v8hf/GHSA-rrrm-qjm4-v8hf.json
CWE IDs: ["CWE-1333", "CWE-400"]
Alternative ID: GHSA-rrrm-qjm4-v8hf
Finding: F211
Auto approve: 1