ET EXPLOIT 401TRG Liferay RCE (CVE-2020-7961)

alert http any any -> $HOME_NET any (
    msg:"ET EXPLOIT 401TRG Liferay RCE (CVE-2020-7961)";
    flow:established,to_server;
    http.uri;
    content:"/api/jsonws/expandocolumn/update-column"; nocase;
    http.request_body;
    content:"userOverridesAsString=HexAsciiSerializedMap"; nocase; fast_pattern;
    reference:cve,2020-7961;
    reference:url,www.synacktiv.com/en/publications/how-to-exploit-liferay-cve-2020-7961-quick-journey-to-poc.html;
    classtype:attempted-admin;
    sid:2031318; rev:1;
    metadata:created_at 2020_12_11, cve CVE_2020_7961, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_11;
)