ET EXPLOIT Zimbra <8.8.11 - XML External Entity Injection/SSRF Attempt (CVE-2019-9621)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/autodiscover"; nocase;
http.request_body;
content:"<!DOCTYPE"; depth:50;
content:"file:///etc/passwd"; distance:0; fast_pattern;
content:"<EMailAddress>";
content:"<AcceptableResponseSchema>";
Raw source ET EXPLOIT Zimbra <8.8.11 - XML External Entity Injection/SSRF Attempt (CVE-2019-9621) · 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 -> $HOME_NET any (
    msg:"ET EXPLOIT Zimbra <8.8.11 - XML External Entity Injection/SSRF Attempt (CVE-2019-9621)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/autodiscover"; nocase;
    http.request_body;
    content:"<!DOCTYPE"; depth:50;
    content:"file:///etc/passwd"; distance:0; fast_pattern;
    content:"<EMailAddress>";
    content:"<AcceptableResponseSchema>";
    reference:url,www.exploit-db.com/exploits/46967;
    reference:url,packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html;
    reference:cve,2019-9621;
    reference:cve,2021-2109;
    classtype:attempted-user;
    sid:2031562; rev:1;
    metadata:affected_product Web_Server_Applications, attack_target Client_Endpoint, created_at 2021_01_27, cve CVE_2021_2109, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2021_01_27;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.