ET WEB_SPECIFIC_APPS Cacti graph_view.php rfilter parameter SQL Injection Attempt (CVE-2023-39361)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Cacti graph_view.php rfilter parameter SQL Injection Attempt (CVE-2023-39361)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/graph|5f|view|2e|php|3f|"; fast_pattern;
    content:"action|3d|tree_content";
    content:"node|3d|1|2d|1|2d|tree|5f|anchor";
    content:"rfilter|3d|";
    pcre:"/^[^<]*?(?:\x27|%27|-{2}|%2d%2d)?(?:(?:S(?:HOW.+(?:C(?:UR(?:DAT|TIM)E|HARACTER.+SET)|(?:VARI|T)ABLES)|ELECT.+(?:FROM|USER|SLEEP|CONCAT|CASE))|U(?:NION.+SELEC|PDATE.+SE)T|DELETE.+FROM|INSERT.+INTO)|S(?:HOW.+(?:C(?:HARACTER.+SET|UR(DATE|TIME))|(?:VARI|T)ABLES)|ELECT.+(?:FROM|USER))|U(?:NION.+SELEC|PDATE.+SE)T|(?:NULL(?:\x2c|%2[cC])){2,}|(?:\x2f|%2[fF])(?:\x2a|%2[aA]).+(?:\x2a|%2[aA]).+(?:\x2f|%2[fF])|CONCAT.+SELECT|EXTRACTVALUE|UNION.+ALL)/Ri";
    reference:url,github.com/Cacti/cacti/security/advisories/GHSA-6r43-q2fw-5wrg;
    reference:cve,2023-39361;
    classtype:attempted-admin;
    sid:2069337; rev:1;
    metadata:affected_product Cacti, attack_target Web_Server, tls_state plaintext, created_at 2026_05_19, cve CVE_2023_39361, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)