ET INFO Cisco IOS XE Web Server Auth From Suspicious Username (cisco_support) (CVE-2023-20198) (Inbound)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.cookie;
content:"Auth=cisco_support"; startswith; fast_pattern;
Raw source ET INFO Cisco IOS XE Web Server Auth From Suspicious Username (cisco_support) (CVE-2023-20198) (Inbound) · 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,$HTTP_SERVERS] any (
    msg:"ET INFO Cisco IOS XE Web Server Auth From Suspicious Username (cisco_support) (CVE-2023-20198) (Inbound)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.cookie;
    content:"Auth=cisco_support"; startswith; fast_pattern;
    reference:url,blog.talosintelligence.com/active-exploitation-of-cisco-ios-xe-software/;
    reference:cve,2023-20198;
    reference:url,twitter.com/SI_FalconTeam/status/1718346358950711807;
    classtype:misc-activity;
    sid:2048934; rev:1;
    metadata:attack_target Networking_Equipment, created_at 2023_10_30, cve CVE_2023_20198, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_30, reviewed_at 2023_10_30;
)

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