ET WEB_SPECIFIC_APPS Reolink RLC Series IP Camera SetDdns Authenticated Command Injection Attempt (CVE-2021-40407, CVE-2021-40408, CVE-2021-40409)
Sourceet/open
CreatedJanuary 27, 2025
UpdatedJanuary 27, 2025
Classificationattempted-admin
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Reolink RLC Series IP Camera SetDdns Authenticated Command Injection Attempt (CVE-2021-40407, CVE-2021-40408, CVE-2021-40409)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/cgi-bin/api.cgi|3f|cmd|3d|SetDdns"; fast_pattern; startswith; http.request_body; content:"|22|cmd|22|"; content:"|22|SetDdns|22 2c|"; within:20; pcre:"/^.+\x22(?:domain|password|username)\x22\x3a[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/Rm"; reference:url,talosintelligence.com/vulnerability_reports/TALOS-2021-1424; reference:cve,2021-40407; reference:cve,2021-40408; reference:cve,2021-40409; classtype:attempted-admin; sid:2059709; rev:1; metadata:affected_product Reolink, attack_target IoT, tls_state plaintext, created_at 2025_01_27, cve CVE_2021_40407_CVE_2021_40408_CVE_2021_40409, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2025_01_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
Metadata
affected productReolink
attack targetIoT
tls stateplaintext
created at2025_01_27
cveCVE_2021_40407_CVE_2021_40408_CVE_2021_40409
deploymentInternal
performance impactLow
confidenceHigh
signature severityMajor
tagCISA_KEV
updated at2025_01_27
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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