ET WEB_SPECIFIC_APPS Cisco ASA/FTD Memory Leak Attempt (CVE-2020-3259)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Cisco ASA/FTD Memory Leak Attempt (CVE-2020-3259)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri; bsize:>800;
    content:"|2b|CSCOE|2b|/sdesktop/webstart.xml|3f|"; fast_pattern;
    content:"|25|p"; endswith;
    reference:url,github.com/GossiTheDog/Exploits/blob/main/Cisco-CVE-2020-3259.sh;
    reference:cve,2020-3259;
    classtype:attempted-admin;
    sid:2060671; rev:1;
    metadata:affected_product Cisco_ASA, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2025_03_07, cve CVE_2020_3259, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)