ET WEB_SPECIFIC_APPS Kaseya VSA Authenticated SQL Injection in exportFldr (CVE-2021-30117)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Kaseya VSA Authenticated SQL Injection in exportFldr (CVE-2021-30117)";
    flow:established,to_server;
    http.uri;
    content:"/InstallTab/exportFldr.asp?"; fast_pattern;
    content:"fldrId|3d|";
    pcre:"/^[^&]*?(?:(?:S(?:HOW\x20(?:C(?:UR(?:DAT|TIM)E|HARACTER\x20SET)|(?:VARI|T)ABLES)|ELECT\x20(?:FROM|USER|SLEEP))|U(?:NION\x20SELEC|PDATE\x20SE)T|DELETE\x20FROM|INSERT\x20INTO)|S(?:HOW.+(?:C(?:HARACTER.+SET|UR(DATE|TIME))|(?:VARI|T)ABLES)|ELECT.+(?:FROM|USER))|U(?:NION.+SELEC|PDATE.+SE)T|DELETE.+FROM|INSERT.+INTO|\x2f\*.+\*\x2f)/Ri";
    reference:url,csirt.divd.nl/cves/CVE-2021-30117/;
    reference:cve,2021-30117;
    classtype:web-application-attack;
    sid:2065485; rev:1;
    metadata:affected_product Kaseya_VSA, attack_target Server, tls_state TLSDecrypt, created_at 2025_10_27, cve CVE_2021_30117, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)