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CVE-2021-41268— Cookie persistence in Symfony

Quick assessment

Affected
symfony symfony
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.

Sensio Labs Symfony是法国Sensio Labs公司的一套免费的、基于MVC架构的PHP开发框架。该框架提供常用的功能组件及工具，可用于快速创建复杂的WEB程序。 Symfony SecurityBundle存在授权问题漏洞，该漏洞源于Symfony SecurityBundle是Symfony的安全系统，一个用于web和控制台应用程序的PHP框架和一组可重用的PHP组件。由于在5.3.0版本中rework的Remember me cookie，当用户更改其密码时，cookie不会失效。

CVSS 6.5 · Medium EPSS 1.32% · P70

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token
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I. Basic Information for CVE-2021-41268

Vulnerability Information
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Vulnerability Title
Cookie persistence in Symfony
Source: CVE Program / CVE List V5
Vulnerability Description
Symfony/SecurityBundle is the security system for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Since the rework of the Remember me cookie in version 5.3.0, the cookie is not invalidated when the user changes their password. Attackers can therefore maintain their access to the account even if the password is changed as long as they have had the chance to login once and get a valid remember me cookie. Starting with version 5.3.12, Symfony makes the password part of the signature by default. In that way, when the password changes, then the cookie is not valid anymore.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5
Vulnerability Title
Sensio Labs Symfony 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sensio Labs Symfony是法国Sensio Labs公司的一套免费的、基于MVC架构的PHP开发框架。该框架提供常用的功能组件及工具，可用于快速创建复杂的WEB程序。 Symfony SecurityBundle存在授权问题漏洞，该漏洞源于Symfony SecurityBundle是Symfony的安全系统，一个用于web和控制台应用程序的PHP框架和一组可重用的PHP组件。由于在5.3.0版本中rework的Remember me cookie，当用户更改其密码时，cookie不会失效。
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
symfony symfony >= 5.3.0, < 5.3.12 -

II. Public POCs for CVE-2021-41268

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III. Intelligence Information for CVE-2021-41268

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Patches & Fixes for CVE-2021-41268 (2)

Vendor Advisories for CVE-2021-41268 (1)

Other References for CVE-2021-41268 (1)

Same Patch Batch · symfony · 2021-11-24 · 3 CVEs total

CVE-2021-41270 6.5 MEDIUM CSV Injection in Symfony
CVE-2021-41267 6.5 MEDIUM Webcache Poisoning in Symfony

IV. Related Vulnerabilities

Same product: symfony
Same vendor: symfony
Same weakness: CWE-384

V. Comments for CVE-2021-41268

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