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CVE-2020-36830— nescalante urlregex Backtracking index.js redos

Quick assessment

Affected
nescalante urlregex
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.

urlregex是Nicolas Escalante个人开发者的一个节点和浏览器的 URL 验证。 urlregex 0.5.0版本及之前版本存在安全漏洞，该漏洞源于执行错误操作会导致正则表达式复杂度低下。

CVSS 4.3 · Medium EPSS 0.80% · P56
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I. Basic Information for CVE-2020-36830

Vulnerability Information
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Vulnerability Title
nescalante urlregex Backtracking index.js redos
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. The manipulation leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.5.1 is able to address this issue. The identifier of the patch is e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9. It is recommended to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
urlregex 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
urlregex是Nicolas Escalante个人开发者的一个节点和浏览器的 URL 验证。 urlregex 0.5.0版本及之前版本存在安全漏洞，该漏洞源于执行错误操作会导致正则表达式复杂度低下。
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
nescalante urlregex 0.1 -

II. Public POCs for CVE-2020-36830

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III. Intelligence Information for CVE-2020-36830

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Vendor Advisories for CVE-2020-36830 (1)

IV. Related Vulnerabilities

Same weakness: CWE-1333

V. Comments for CVE-2020-36830

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