""ET EXPLOIT Zyxel NWA-1100-NH Command Injection Attempt (CVE-2021-4039)""
SID: 2036737
Revision: 1
Class Type: attempted-admin
Metadata: attack_target Networking_Equipment, created_at 2022_06_01, cve CVE_2021_4039, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2022_06_01, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services
Reference:
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cve
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2021-4039
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: [$HTTP_SERVERS,$HOME_NET]
Destination Port: any
Flow: established,to_server
Contents:
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Value: "POST"
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Value: "/login/login.html"
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Value: "myname="
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Value: "mypasswd="
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Value: "Submit=Login"
Within:
PCRE: "/myname=[^&]+(?:[\x60\x3b\x7c\x26]|%60|%3b|%7c|%26|(?:[\x3c\x3e\x24]|%3c|%3e|%24)(?:\x28|%28))/Pi"
Special Options:
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http_method
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http_uri
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fast_pattern
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http_client_body
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http_client_body
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http_client_body