ET EXPLOIT SonicWall SMA 100 Series - Unauthenticated File Upload Path Traversal (CVE-2021-20040)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT SonicWall SMA 100 Series - Unauthenticated File Upload Path Traversal (CVE-2021-20040)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"swcctn="; fast_pattern;
    content:"|2e 2f|"; distance:0; within:3;
    reference:url,research.nccgroup.com/2021/12/09/technical-advisory-sonicwall-sma-100-series-unauthenticated-file-upload-path-traversal-cve-2021-20040/;
    reference:cve,2021-20040;
    classtype:attempted-admin;
    sid:2034896; rev:1;
    metadata:created_at 2022_01_12, cve CVE_2021_20040, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_12, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1083, mitre_technique_name File_And_Directory_Discovery;
    target:dest_ip;
)