ET EXPLOIT Realtek SDK - Command Execution/Backdoor Access Inbound (CVE-2021-35394)

Query · suricata

flow:to_server;
content:"orf|3b|"; fast_pattern; startswith;
threshold:type limit, count 1, seconds 3600, track by_src;
Raw source ET EXPLOIT Realtek SDK - Command Execution/Backdoor Access Inbound (CVE-2021-35394) · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp any any -> $HOME_NET 9034 (
    msg:"ET EXPLOIT Realtek SDK - Command Execution/Backdoor Access Inbound (CVE-2021-35394)";
    flow:to_server;
    content:"orf|3b|"; fast_pattern; startswith;
    threshold:type limit, count 1, seconds 3600, track by_src;
    reference:cve,2021-35394;
    reference:url,unit42.paloaltonetworks.com/realtek-sdk-vulnerability/;
    reference:url,onekey.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain;
    classtype:attempted-admin;
    sid:2044008; rev:2;
    metadata:affected_product IoT, attack_target Networking_Equipment, created_at 2023_01_27, cve CVE_2021_35394, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_12, reviewed_at 2023_08_21;
)

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