Fix CVE–2022–21680

[debricked-staging]

CVE–2022–21680

Vulnerable dependency:     marked (Yarn)    0.4.0

Vulnerable dependency:     marked (npm)    0.4.0

Vulnerability details

Description

NVD

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.

GitHub

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.

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 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

CVSS details - 7.5

 

CVSS3 metrics
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

References

    Inefficient Regular Expression Complexity in marked · CVE-2022-21680 · GitHub Advisory Database · GitHub
    NVD - CVE-2022-21680
    Merge pull request from GHSA-rrrm-qjm4-v8hf · markedjs/marked@c4a3ccd · GitHub
    Cubic catastrophic backtracking (ReDoS) in block.def · Advisory · markedjs/marked · GitHub
    Release v4.0.10 · markedjs/marked · GitHub

 

Related information

📌 Remember! Check the changes to ensure they don't introduce any breaking changes.
📚 Read more about the CVE