ET EXPLOIT Possible EXIM RCE Inbound (CVE-2019-15846)

Query · suricata

flow:established,to_server;
content:"|16|"; depth:1;
content:"|01|"; distance:4; within:1;
content:"|5c 00|"; fast_pattern; distance:0;
pcre:"/[\x20-\x7e]{5,}\x5c\x00[\x20-\x7e]{5,}/";
Raw source ET EXPLOIT Possible EXIM RCE Inbound (CVE-2019-15846) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp any any -> $SMTP_SERVERS any (
    msg:"ET EXPLOIT Possible EXIM RCE Inbound (CVE-2019-15846)";
    flow:established,to_server;
    content:"|16|"; depth:1;
    content:"|01|"; distance:4; within:1;
    content:"|5c 00|"; fast_pattern; distance:0;
    pcre:"/[\x20-\x7e]{5,}\x5c\x00[\x20-\x7e]{5,}/";
    reference:cve,2019-15846;
    reference:url,exim.org/static/doc/security/CVE-2019-15846.txt;
    classtype:attempted-admin;
    sid:2027959; rev:2;
    metadata:created_at 2019_09_06, cve CVE_2019_15846, performance_impact Significant, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_09_10;
)

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