ET EXPLOIT Cisco REST API Container for Cisco IOS XE Software Authentication Bypass - Token Usage (CVE-2019-12643)

Query · suricata

flow:established,to_server;
xbits:isset,ET.Cisco_ABypass,track ip_pair,expire 60;
http.method;
content:"GET";
http.header_names;
content:"|0d 0a|x-auth-token|0d 0a|"; fast_pattern; nocase;
target:dest_ip;

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 Cisco REST API Container for Cisco IOS XE Software Authentication Bypass - Token Usage (CVE-2019-12643) · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> [$HOME_NET,$HTTP_SERVERS] 55443 (
    msg:"ET EXPLOIT Cisco REST API Container for Cisco IOS XE Software Authentication Bypass - Token Usage (CVE-2019-12643)";
    flow:established,to_server;
    xbits:isset,ET.Cisco_ABypass,track ip_pair,expire 60;
    http.method;
    content:"GET";
    http.header_names;
    content:"|0d 0a|x-auth-token|0d 0a|"; fast_pattern; nocase;
    reference:cve,2019-12643;
    classtype:successful-admin;
    sid:2035012; rev:3;
    metadata:affected_product Cisco_IOS, attack_target Networking_Equipment, created_at 2022_01_28, cve CVE_2019_12643, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_08_20, 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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