ET EXPLOIT Vulnerable Microsoft Exchange Server Response (CVE-2021-31207)

Query · suricata

flow:established,from_server;
http.stat_code;
content:"302";
flowbits:isset,ET.cve.2021.34473;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET EXPLOIT Vulnerable Microsoft Exchange Server Response (CVE-2021-31207) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (
    msg:"ET EXPLOIT Vulnerable Microsoft Exchange Server Response (CVE-2021-31207)";
    flow:established,from_server;
    http.stat_code;
    content:"302";
    flowbits:isset,ET.cve.2021.34473;
    reference:cve,2021-31207;
    classtype:attempted-admin;
    sid:2033683; rev:1;
    metadata:affected_product Microsoft_Exchange, attack_target Server, created_at 2021_08_09, cve CVE_2021_31207, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2022_12_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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