ET WEB_SERVER MinIO Incomplete Signature Validation for Unsigned-Trailer Uploads (CVE-2025-31489)

Query · suricata

flow:established,to_server;
http.method;
content:"PUT";
http.header;
content:"Signature|3d|";
content:"x-amz-content-sha256|3a 20|STREAMING-UNSIGNED-PAYLOAD-TRAILER"; fast_pattern;
target:dest_ip;
Raw source ET WEB_SERVER MinIO Incomplete Signature Validation for Unsigned-Trailer Uploads (CVE-2025-31489) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_SERVER MinIO Incomplete Signature Validation for Unsigned-Trailer Uploads (CVE-2025-31489)";
    flow:established,to_server;
    http.method;
    content:"PUT";
    http.header;
    content:"Signature|3d|";
    content:"x-amz-content-sha256|3a 20|STREAMING-UNSIGNED-PAYLOAD-TRAILER"; fast_pattern;
    reference:url,github.com/minio/minio/security/advisories/GHSA-wg47-6jq2-q2hh;
    reference:cve,2025-31489;
    classtype:web-application-activity;
    sid:2061442; rev:1;
    metadata:affected_product MinIO, attack_target Server, tls_state TLSDecrypt, created_at 2025_04_10, cve CVE_2025_31489, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit, updated_at 2025_04_10, 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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