ET HUNTING HTTP URI Path Normalization Bypasses & Escapes M2

Query · suricata

flow:established,to_server;
http.uri;
content:"%2e%2e%3b%2f"; fast_pattern; nocase;
http.header_names;
content:!"Referer|0d 0a|";
target:dest_ip;
Raw source ET HUNTING HTTP URI Path Normalization Bypasses & Escapes 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET HUNTING HTTP URI Path Normalization Bypasses & Escapes M2";
    flow:established,to_server;
    http.uri;
    content:"%2e%2e%3b%2f"; fast_pattern; nocase;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,i.blackhat.com/us-18/Wed-August-8/us-18-Orange-Tsai-Breaking-Parser-Logic-Take-Your-Path-Normalization-Off-And-Pop-0days-Out-2.pdf;
    classtype:web-application-attack;
    sid:2058077; rev:1;
    metadata:attack_target Server, tls_state TLSDecrypt, created_at 2024_12_05, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2024_12_05, 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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