ET DOS Possible SSDP Amplification Scan in Progress

Query · suricata

content:"M-SEARCH * HTTP/1.1";
content:"ST|3a 20|ssdp|3a|all|0d 0a|"; nocase; distance:0; fast_pattern;
threshold:type both,track by_src,count 2,seconds 60;
Raw source ET DOS Possible SSDP Amplification Scan in Progress · 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 1900 (
    msg:"ET DOS Possible SSDP Amplification Scan in Progress";
    content:"M-SEARCH * HTTP/1.1";
    content:"ST|3a 20|ssdp|3a|all|0d 0a|"; nocase; distance:0; fast_pattern;
    threshold:type both,track by_src,count 2,seconds 60;
    reference:url,community.rapid7.com/community/metasploit/blog/2014/08/29/weekly-metasploit-update;
    classtype:attempted-dos;
    sid:2019102; rev:1;
    metadata:created_at 2014_09_03, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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