CVE-2022-21680 Information

Description

Marked is a markdown parser and compiler. Prior to version 4.0.10 the regular expression block.def may cause catastrophic backtracking against some strings and lead to a regular expression denial of service (ReDoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched in version 4.0.10. As a workaround avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.

CVSS Vector

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

Reference

https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hf https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012c0 https://github.com/markedjs/marked/releases/tag/v4.0.10

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5