ET EXPLOIT Xiongmai/HiSilicon DVR - RTSP Buffer Overflow Attempt - CVE-2022-26259

Query · suricata

flow:established,to_server;
http.method;
content:"OPTIONS";
http.header;
content:"CSeq|3a 20 3b|"; fast_pattern;
content:!"|0d 0a|"; within:100;
Raw source ET EXPLOIT Xiongmai/HiSilicon DVR - RTSP Buffer Overflow Attempt - CVE-2022-26259 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Xiongmai/HiSilicon DVR - RTSP Buffer Overflow Attempt - CVE-2022-26259";
    flow:established,to_server;
    http.method;
    content:"OPTIONS";
    http.header;
    content:"CSeq|3a 20 3b|"; fast_pattern;
    content:!"|0d 0a|"; within:100;
    reference:url,vulncheck.com/blog/xiongmai-iot-exploitation;
    reference:url,blog.ret2.me/post/2022-01-26-exploiting-xiongmai-dvrs/;
    reference:cve,2022-26259;
    classtype:attempted-admin;
    sid:2041650; rev:1;
    metadata:affected_product DVR, attack_target IoT, created_at 2022_12_02, cve CVE_2022_26259, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_02;
)

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