ET WEB_SPECIFIC_APPS IPFire calamaris.dat Multiple Parameters Command Injection Attempt (CVE-2025-34311)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS IPFire calamaris.dat Multiple Parameters Command Injection Attempt (CVE-2025-34311)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:31;
    content:"/cgi-bin/logs.cgi/calamaris.dat"; fast_pattern;
    http.request_body;
    pcre:"/(?:(?:DAY|MONTH|YEAR)_(?:BEGIN|END)|NUM_(?:CONTENT|HOSTS|URLS|DOMAINS)|HIST_LEVEL|PERF_INTERVAL|BYTE_UNIT)\x3d[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/";
    reference:url,bugzilla.ipfire.org/attachment.cgi?id=1663;
    reference:cve,2025-34311;
    classtype:attempted-admin;
    sid:2065594; rev:1;
    metadata:affected_product IPFire, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_30, cve CVE_2025_34311, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_10_30, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)