ET DOS CallStranger - Attempted UPnP Reflected Amplified TCP with Multiple Callbacks (CVE-2020-12695)

Query · suricata

flow:established,to_server;
http.method;
content:"SUBSCRIBE";
http.header;
content:"CALLBACK|3a 20|"; fast_pattern; nocase;
content:"<http"; distance:0;
content:"><http"; distance:0;
pcre:"/^Callback\x3a\x20<http[^>]+><http/mi";
Raw source ET DOS CallStranger - Attempted UPnP Reflected Amplified TCP with Multiple Callbacks (CVE-2020-12695) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> any any (
    msg:"ET DOS CallStranger - Attempted UPnP Reflected Amplified TCP with Multiple Callbacks (CVE-2020-12695)";
    flow:established,to_server;
    http.method;
    content:"SUBSCRIBE";
    http.header;
    content:"CALLBACK|3a 20|"; fast_pattern; nocase;
    content:"<http"; distance:0;
    content:"><http"; distance:0;
    pcre:"/^Callback\x3a\x20<http[^>]+><http/mi";
    reference:url,github.com/yunuscadirci/CallStranger;
    reference:cve,2020-12695;
    classtype:attempted-dos;
    sid:2030339; rev:2;
    metadata:affected_product UPnP, attack_target IoT, created_at 2020_06_15, cve CVE_2020_12695, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_11;
)

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