ET HUNTING Possible UPnP UUID Overflow Exploit Attempt from External Host - SUBSCRIBE/UNSUBSCRIBE

Query · suricata

flow:established,to_server;
http.method;
content:"SUBSCRIBE";
http.header;
content:"UUID|3a 20|"; fast_pattern;
pcre:"/^[^\r\n]{100,}/R";
Raw source ET HUNTING Possible UPnP UUID Overflow Exploit Attempt from External Host - SUBSCRIBE/UNSUBSCRIBE · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET HUNTING Possible UPnP UUID Overflow Exploit Attempt from External Host - SUBSCRIBE/UNSUBSCRIBE";
    flow:established,to_server;
    http.method;
    content:"SUBSCRIBE";
    http.header;
    content:"UUID|3a 20|"; fast_pattern;
    pcre:"/^[^\r\n]{100,}/R";
    classtype:unknown;
    sid:2034495; rev:1;
    metadata:created_at 2021_11_18, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_18;
)

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