ET WEB_SPECIFIC_APPS H3C aaa_portal_auth_local_submit suffix Parameter Command Injection Attempt (CVE-2026-3943)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/webui/|3f|aaa_portal_auth_local_submit"; startswith; fast_pattern;
content:"suffix|3d|"; distance:0;
pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS H3C aaa_portal_auth_local_submit suffix Parameter Command Injection Attempt (CVE-2026-3943) · 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 H3C aaa_portal_auth_local_submit suffix Parameter Command Injection Attempt (CVE-2026-3943)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/webui/|3f|aaa_portal_auth_local_submit"; startswith; fast_pattern;
    content:"suffix|3d|"; distance:0;
    pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
    reference:url,github.com/leeyper/CVE/issues/1;
    reference:cve,2026-3943;
    classtype:attempted-admin;
    sid:2068151; rev:1;
    metadata:affected_product H3C, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_03_11, cve CVE_2026_3943, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_11, 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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