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CVE-2021-43309— ReDoS in uri-template-lite URI.expand function

Quick assessment

Affected
uri-template-lite uri-template-lite
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.

uri-template-lite是LiteJS开源的一种 URI 模板 RFC 6570 扩展和提取。 uri-template-lite 存在安全漏洞，当攻击者能够向 URI.expand 方法提供任意输入时，可以在 uri-template-lite 包中触发指数 ReDoS。

CVSS 5.9 · Medium EPSS 0.99% · P62

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-43309

Vulnerability Information
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Vulnerability Title
ReDoS in uri-template-lite URI.expand function
Source: CVE Program / CVE List V5
Vulnerability Description
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
uri-template-lite 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
uri-template-lite是LiteJS开源的一种 URI 模板 RFC 6570 扩展和提取。 uri-template-lite 存在安全漏洞，当攻击者能够向 URI.expand 方法提供任意输入时，可以在 uri-template-lite 包中触发指数 ReDoS。
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
uri-template-lite uri-template-lite 0 ~ 22.9.0 -

II. Public POCs for CVE-2021-43309

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III. Intelligence Information for CVE-2021-43309

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Other References for CVE-2021-43309 (2)

IV. Related Vulnerabilities

Same weakness: CWE-1333

V. Comments for CVE-2021-43309

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