ET EXPLOIT Possible Barracuda Email Security Gateway Remote Code Execution Attempt (CVE-2023-2868) M2

Query · suricata

flow:established,to_server;
file.data;
content:"|60 27|";
content:"|75 73 74 61 72|"; distance:0; fast_pattern;
content:"|27 60|"; distance:0; within:500;
target:dest_ip;
Raw source ET EXPLOIT Possible Barracuda Email Security Gateway Remote Code Execution Attempt (CVE-2023-2868) M2 · 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 Barracuda Email Security Gateway Remote Code Execution Attempt (CVE-2023-2868) M2";
    flow:established,to_server;
    file.data;
    content:"|60 27|";
    content:"|75 73 74 61 72|"; distance:0; fast_pattern;
    content:"|27 60|"; distance:0; within:500;
    reference:url,www.mandiant.com/resources/blog/barracuda-esg-exploited-globally;
    reference:cve,2023-2868;
    classtype:attempted-admin;
    sid:2048146; rev:2;
    metadata:affected_product Barracuda_ESG, attack_target SMTP_Server, created_at 2023_09_21, cve CVE_2023_2868, deployment Perimeter, deployment Internal, performance_impact Low, confidence Low, signature_severity Major, tag CISA_KEV, updated_at 2023_09_29, reviewed_at 2024_10_02, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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