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CVE-2022-21681— Exponential catastrophic backtracking (ReDoS) in marked

Quick assessment

Affected
markedjs marked
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

marked是美国Christopher Jeffrey个人开发者的一款使用JavaScript编写的Markdown解析器和编译器。 marked 中存在安全漏洞，该漏洞源于一个降价解析器和编译器。在 4.0.10 版本之前，正则表达式 可能会导致对某些字符串的灾难性回溯并导致拒绝服务 (DoS)。任何通过易受攻击的标记版本运行不受信任的降价并且不使用有时间限制的工作人员的人都可能会受到影响。

CVSS 7.5 · High EPSS 2.74% · P85

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2022-21681

Vulnerability Information
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Vulnerability Title
Exponential catastrophic backtracking (ReDoS) in marked
Source: CVE Program / CVE List V5
Vulnerability Description
Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `inline.reflinkSearch` may cause catastrophic backtracking against some strings and lead to a denial of service (DoS). 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
marked 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
marked是美国Christopher Jeffrey个人开发者的一款使用JavaScript编写的Markdown解析器和编译器。 marked 中存在安全漏洞，该漏洞源于一个降价解析器和编译器。在 4.0.10 版本之前，正则表达式 `inline.reflinkSearch` 可能会导致对某些字符串的灾难性回溯并导致拒绝服务 (DoS)。任何通过易受攻击的标记版本运行不受信任的降价并且不使用有时间限制的工作人员的人都可能会受到影响。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
markedjs marked < 4.0.10 -

II. Public POCs for CVE-2022-21681

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III. Intelligence Information for CVE-2022-21681

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Patches & Fixes for CVE-2022-21681 (1)

Vendor Advisories for CVE-2022-21681 (1)

Mailing List Discussions for CVE-2022-21681 (1)

IV. Related Vulnerabilities

Same product: marked
Same vendor: markedjs
Same weakness: CWE-400

V. Comments for CVE-2022-21681

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