ET WEB_SPECIFIC_APPS SonicOS SSLVPN Authentication Bypass HTTP Cookie (swap) (CVE-2024-53704)

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS SonicOS SSLVPN Authentication Bypass HTTP Cookie (swap) (CVE-2024-53704)";
    flow:established,to_server;
    flowbits:set,ET.CVE_2024_53704;
    http.method;
    content:"GET";
    http.uri;
    content:"/cgi-bin/sslvpnclient|3f|"; fast_pattern;
    content:"launchplatform|3d|";
    http.cookie;
    content:"swap|3d|";
    pcre:"/^[\x00-\xff]{32}/R";
    reference:url,bishopfox.com/blog/sonicwall-cve-2024-53704-ssl-vpn-session-hijacking;
    reference:cve,2024-53704;
    classtype:web-application-attack;
    sid:2060055; rev:1;
    metadata:affected_product SonicWall, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2025_02_13, cve CVE_2024_53704, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2025_02_13;
    target:dest_ip;
)