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CVE-2021-29624— Lack of protection against cookie tossing attacks in fastify-csrf

Quick assessment

Affected
fastify fastify-csrf
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.

Fastify是OpenJS（Openjs）基金会的一款用于Node.js的开源Web框架。 Node.js fastify 存在安全漏洞，攻击者可以通过Node.js fastify-csrf的Cookie Double Submit触发跨站请求伪造，以迫使受害者执行操作。

CVSS 6.5 · Medium EPSS 0.83% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-29624

Vulnerability Information
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Vulnerability Title
Lack of protection against cookie tossing attacks in fastify-csrf
Source: CVE Program / CVE List V5
Vulnerability Description
fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Version 3.1.0 of the fastify-csrf fixes it. the vulnerability. The user of the module would need to supply a `userInfo` when generating the CSRF token to fully implement the protection on their end. This is needed only for applications hosted on different subdomains.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Fastify 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fastify是OpenJS（Openjs）基金会的一款用于Node.js的开源Web框架。 Node.js fastify 存在安全漏洞，攻击者可以通过Node.js fastify-csrf的Cookie Double Submit触发跨站请求伪造，以迫使受害者执行操作。
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
fastify fastify-csrf < 3.1.0 -

II. Public POCs for CVE-2021-29624

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III. Intelligence Information for CVE-2021-29624

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Patches & Fixes for CVE-2021-29624 (2)

Vendor Advisories for CVE-2021-29624 (1)

Other References for CVE-2021-29624 (3)

IV. Related Vulnerabilities

Same product: fastify-csrf
Same vendor: fastify
Same weakness: CWE-565

V. Comments for CVE-2021-29624

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