ET MALWARE Potential Juniper Phar Deserialization RCE Attempt (CVE-2022-22241)

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Potential Juniper Phar Deserialization RCE Attempt (CVE-2022-22241)";
    flow:established,to_server;
    http.request_line;
    content:"POST|20|/jsdm/ajax/logging_browse.php|20|"; startswith; fast_pattern;
    http.request_body;
    content:"filepath|3d|phar|3a|";
    reference:url,octagon.net/blog/2022/10/28/juniper-sslvpn-junos-rce-and-multiple-vulnerabilities/;
    reference:cve,2022-22241;
    classtype:trojan-activity;
    sid:2039591; rev:1;
    metadata:attack_target Networking_Equipment, created_at 2022_10_28, cve CVE_2022_22241, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_28;
)