CVE-2020-4050— set-screen-option filter misuse by plugins leading to privilege escalation in WordPress
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2020-4050
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 |
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Remote Code Execution in `WP_HTML_Token`
Same weakness: CWE-288
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