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CVE-2020-4048— Open redirect in wp_validate_redirect() 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中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。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版本，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

CVSS 5.7 · Medium EPSS 1.98% · P80

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2020-4048

Vulnerability Information
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Vulnerability Title
Open redirect in wp_validate_redirect() in WordPress
Source: CVE Program / CVE List V5
Vulnerability Description
In affected versions of WordPress, due to an issue in wp_validate_redirect() and URL sanitization, an arbitrary external link can be crafted leading to unintended/open redirect when clicked. 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:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 输入验证错误漏洞
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中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。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版本，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
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-2020-4048

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III. Intelligence Information for CVE-2020-4048

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Patches & Fixes for CVE-2020-4048 (1)

Vendor Advisories for CVE-2020-4048 (2)

Mailing List Discussions for CVE-2020-4048 (4)

Other References for CVE-2020-4048 (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-2020-4046 5.4 MEDIUM Authenticated XSS through embed block in WordPress
CVE-2020-4050 3.5 LOW set-screen-option filter misuse by plugins leading to privilege escalation 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-601

V. Comments for CVE-2020-4048

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