ET WEB_SPECIFIC_APPS Grafana Open Redirect (CVE-2025-4123) M2

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /a/";
content:"/explore HTTP/"; fast_pattern;
http.uri.raw;
content:"public";
pcre:"/^(?:\x2f|%(?:25)?2[fF])(?:(?:\x2e|%(?:25)?2[Ee]){1,2}(?:\x2f|%(?:25)?2[Ff]){1,})+(?:\x5c|%(?:25)?5[cC])/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Grafana Open Redirect (CVE-2025-4123) M2 · 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_SPECIFIC_APPS Grafana Open Redirect (CVE-2025-4123) M2";
    flow:established,to_server;
    http.request_line;
    content:"GET /a/";
    content:"/explore HTTP/"; fast_pattern;
    http.uri.raw;
    content:"public";
    pcre:"/^(?:\x2f|%(?:25)?2[fF])(?:(?:\x2e|%(?:25)?2[Ee]){1,2}(?:\x2f|%(?:25)?2[Ff]){1,})+(?:\x5c|%(?:25)?5[cC])/R";
    reference:url,nightbloodz.github.io/grafana-CVE-2025-4123/;
    reference:cve,2025-4123;
    classtype:web-application-attack;
    sid:2065930; rev:1;
    metadata:affected_product Grafana, attack_target Server, tls_state TLSDecrypt, created_at 2025_11_26, cve CVE_2025_4123, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_26, 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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