ET EXPLOIT Apache Struts Possible OGNL Java WriteFile in URI

Query · suricata

flow:to_server,established;
http.uri;
content:"java.io.FileOutputStream"; nocase;
content:".write"; distance:0; nocase;
content:"sun.misc.BASE64Decoder"; nocase;
Raw source ET EXPLOIT Apache Struts Possible OGNL Java WriteFile in URI · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET EXPLOIT Apache Struts Possible OGNL Java WriteFile in URI";
    flow:to_server,established;
    http.uri;
    content:"java.io.FileOutputStream"; nocase;
    content:".write"; distance:0; nocase;
    content:"sun.misc.BASE64Decoder"; nocase;
    reference:url,struts.apache.org/development/2.x/docs/s2-013.html;
    classtype:attempted-user;
    sid:2016959; rev:4;
    metadata:created_at 2013_06_01, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;
)

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