ET INFO Potentially Vulnerable Erlang/OTP SSH Server Banner (CVE-2025-32433)

Query · suricata

flow:established,to_client;
flowbits:set,ET.ErlangOTPBanner;
ssh.software;
content:"Erlang/";
pcre:"/^(?:(?:4\x2e(?:[0-9]|1[0-5])\x2e[0-3]\x2e(?:[0-9]|1[0-1]))|(?:5\x2e2\x2e(?:[0-9]))|(?:5\x2e1\x2e[0-4]\x2e[0-7]))/R";
target:src_ip;

Rule dependencies

Feeds into

  • 3 rules read ET.ErlangOTPBanner · view all
Raw source ET INFO Potentially Vulnerable Erlang/OTP SSH Server Banner (CVE-2025-32433) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert ssh $HOME_NET any -> any any (
    msg:"ET INFO Potentially Vulnerable Erlang/OTP SSH Server Banner (CVE-2025-32433)";
    flow:established,to_client;
    flowbits:set,ET.ErlangOTPBanner;
    ssh.software;
    content:"Erlang/";
    pcre:"/^(?:(?:4\x2e(?:[0-9]|1[0-5])\x2e[0-3]\x2e(?:[0-9]|1[0-1]))|(?:5\x2e2\x2e(?:[0-9]))|(?:5\x2e1\x2e[0-4]\x2e[0-7]))/R";
    reference:url,www.runzero.com/blog/erlang-otp-ssh/;
    reference:cve,2025-32433;
    classtype:misc-activity;
    sid:2061790; rev:3;
    metadata:affected_product Erlang_OTP, attack_target Server, tls_state plaintext, created_at 2025_04_22, cve CVE_2025_32433, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Informational, tag Exploit, updated_at 2025_06_26, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:src_ip;
)

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