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CVE-2020-4050— set-screen-option filter misuse by plugins leading to privilege escalation in WordPress

Quick assessment

Affected
WordPress wordpress-develop
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.

WordPress是WordPress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress中存在安全漏洞。攻击者可利用该漏洞提升权限。以下产品及版本受到影响：WordPress 5.3.4版本，5.2.7版本，5.1.6版本，5.0.10版本，4.9.15版本，4.8.14版本，4.7.18， 4.6.19版本，4.5.22版本，4.4.23版本，4.3.24版本，4.2.28版本，4.1.31版本，4.0.31版本，3.9.32版本，3

CVSS 3.5 · Low EPSS 1.41% · P72

Possible ATT&CK Techniques 1 AI

T1136.001 · Local Account
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I. Basic Information for CVE-2020-4050

Vulnerability Information
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Vulnerability Title
set-screen-option filter misuse by plugins leading to privilege escalation in WordPress
Source: CVE Program / CVE List V5
Vulnerability Description
In affected versions of WordPress, misuse of the `set-screen-option` filter's return value allows arbitrary user meta fields to be saved. It does require an admin to install a plugin that would misuse the filter. Once installed, it can be leveraged by low privileged users. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress中存在安全漏洞。攻击者可利用该漏洞提升权限。以下产品及版本受到影响：WordPress 5.3.4版本，5.2.7版本，5.1.6版本，5.0.10版本，4.9.15版本，4.8.14版本，4.7.18， 4.6.19版本，4.5.22版本，4.4.23版本，4.3.24版本，4.2.28版本，4.1.31版本，4.0.31版本，3.9.32版本，3
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
WordPress wordpress-develop >= 5.4.0, < 5.4.2 -

II. Public POCs for CVE-2020-4050

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III. Intelligence Information for CVE-2020-4050

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Patches & Fixes for CVE-2020-4050 (1)

Vendor Advisories for CVE-2020-4050 (2)

Mailing List Discussions for CVE-2020-4050 (4)

Other References for CVE-2020-4050 (1)

Same Patch Batch · WordPress · 2020-06-12 · 5 CVEs total

CVE-2020-4047 6.8 MEDIUM Authenticated XSS via media attachment page in WordPress
CVE-2020-4048 5.7 MEDIUM Open redirect in wp_validate_redirect() in WordPress
CVE-2020-4046 5.4 MEDIUM Authenticated XSS through embed block in WordPress
CVE-2020-4049 2.4 LOW Authenticated self-XSS via theme uploads in WordPress

IV. Related Vulnerabilities

Same product: wordpress-develop
Same vendor: WordPress
Same weakness: CWE-288

V. Comments for CVE-2020-4050

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