ET WEB_SPECIFIC_APPS Possible Apache Struts OGNL Expression Injection (CVE-2017-5638) (Content-Disposition) M1

Query · suricata

flow:to_server,established;
http.header;
content:"multipart/form-data"; nocase;
http.request_body;
content:"Content-Disposition|3a|"; nocase;
content:"filename"; nocase;
pcre:"/^[^\r\n]*filename\s*=\s*[^\x3b\x3a\r\n]*[\x25\x24]\s*\{[^\r\n]{20,}\}/mi";
Raw source ET WEB_SPECIFIC_APPS Possible Apache Struts OGNL Expression Injection (CVE-2017-5638) (Content-Disposition) M1 · Suricata
Esc
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 WEB_SPECIFIC_APPS Possible Apache Struts OGNL Expression Injection (CVE-2017-5638) (Content-Disposition) M1";
    flow:to_server,established;
    http.header;
    content:"multipart/form-data"; nocase;
    http.request_body;
    content:"Content-Disposition|3a|"; nocase;
    content:"filename"; nocase;
    pcre:"/^[^\r\n]*filename\s*=\s*[^\x3b\x3a\r\n]*[\x25\x24]\s*\{[^\r\n]{20,}\}/mi";
    reference:url,community.hpe.com/t5/Security-Research/Struts2-046-A-new-vector/ba-p/6949723#.WNF-_kcpDUJ;
    classtype:web-application-attack;
    sid:2024096; rev:4;
    metadata:affected_product Apache_Struts2, attack_target Web_Server, created_at 2017_03_20, deployment Datacenter, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2020_08_04;
)

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