alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET WEB_SPECIFIC_APPS Possible Ivanti Pulse Secure Authentication Bypass and Command Injection Attempt M2 (CVE-2023-46805, CVE-2024-21887)";
flow:established,to_server;
http.request_line;
content:"GET /api/v1/cav/client/status/"; fast_pattern;
content:"./"; distance:0;
content:"./"; distance:0;
reference:url,www.assetnote.io/resources/research/high-signal-detection-and-exploitation-of-ivantis-pulse-connect-secure-auth-bypass-rce;
reference:cve,2023-46805;
reference:cve,2024-21887;
classtype:trojan-activity;
sid:2050280; rev:2;
metadata:affected_product Pulse_Secure, created_at 2024_01_22, cve CVE_2023_46805_CVE_2024_21887, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_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;
)