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CVE-2020-5275— Firewall configured with unanimous strategy was not actually unanimous in symfony/security-http

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。 Sensio Labs symfony/security-http 4.4.7之前版本和5.0.7之前版本中存在授权问题漏洞，该漏洞源于程序无法检查属性。攻击者可通过发送特制的请求利用该漏洞绕过身份验证并获取管理权限。

CVSS 7.6 · High EPSS 1.15% · P66

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-5275

Vulnerability Information
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Vulnerability Title
Firewall configured with unanimous strategy was not actually unanimous in symfony/security-http
Source: CVE Program / CVE List V5
Vulnerability Description
In symfony/security-http before versions 4.4.7 and 5.0.7, when a `Firewall` checks access control rule, it iterate overs each rule's attributes and stops as soon as the accessDecisionManager decides to grant access on the attribute, preventing the check of next attributes that should have been take into account in an unanimous strategy. The accessDecisionManager is now called with all attributes at once, allowing the unanimous strategy being applied on each attribute. This issue is patched in versions 4.4.7 and 5.0.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sensio Labs symfony/security-http 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。 Sensio Labs symfony/security-http 4.4.7之前版本和5.0.7之前版本中存在授权问题漏洞，该漏洞源于程序无法检查属性。攻击者可通过发送特制的请求利用该漏洞绕过身份验证并获取管理权限。
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 >= 4.4.0, < 4.4.7 -

II. Public POCs for CVE-2020-5275

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III. Intelligence Information for CVE-2020-5275

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Patches & Fixes for CVE-2020-5275 (1)

Vendor Advisories for CVE-2020-5275 (1)

Mailing List Discussions for CVE-2020-5275 (1)

Same Patch Batch · symfony · 2020-03-30 · 3 CVEs total

CVE-2020-5274 4.6 MEDIUM Exceptions displayed in non-debug configurations in Symfony
CVE-2020-5255 2.6 LOW Prevent cache poisoning via a Response Content-Type header

IV. Related Vulnerabilities

Same product: symfony
Same vendor: symfony
Same weakness: CWE-285

V. Comments for CVE-2020-5275

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