ET WEB_SPECIFIC_APPS KLog Server Directory Traversal Attempt (CVE-2025-1035)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS KLog Server Directory Traversal Attempt (CVE-2025-1035)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/actions/download.php|3f|action|3d|web|26|file|3d|"; startswith; fast_pattern;
    pcre:"/^[^\x26]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R";
    reference:url,github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-1035.yaml;
    reference:cve,2025-1035;
    classtype:attempted-admin;
    sid:2060783; rev:1;
    metadata:affected_product KLog_Server, attack_target Web_Server, tls_state plaintext, created_at 2025_03_11, cve CVE_2025_1035, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_03_11, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)