ET WEB_SPECIFIC_APPS Ivanti EPM postcgi.exe Multiple Parameter Cross Site Scripting Attempt (CVE-2025-10573)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Ivanti EPM postcgi.exe Multiple Parameter Cross Site Scripting Attempt (CVE-2025-10573)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:61;
    content:"/incoming/postcgi.exe|3f|prefix|3d|ldscan|26|suffix|3d 2e|scn|26|name|3d|scan"; fast_pattern;
    http.request_body;
    content:"|3d|INJECT|22|";
    pcre:"/^.*(?:on(?:(?:error)|(?:s(?:elec|ubmi)|rese)t|d(?:blclick|ragdrop)|(?:mouse|key)[a-z]|c(?:hange|lick)|(?:un)?load|focus|blur)|s(?:cript|tyle))(?:=|%3[dD])?/Ri";
    reference:url,www.rapid7.com/blog/post/cve-2025-10573-ivanti-epm-unauthenticated-stored-cross-site-scripting-fixed/;
    reference:cve,2025-10573;
    classtype:web-application-attack;
    sid:2066225; rev:1;
    metadata:affected_product Ivanti, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_12_09, cve CVE_2025_10573, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)