ET EXPLOIT Cisco IOS XE Web UI Command Injection Vulnerability (CVE-2023-20273)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Cisco IOS XE Web UI Command Injection Vulnerability (CVE-2023-20273)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/webui/rest/softwareMgmt/installAdd"; startswith; nocase; fast_pattern;
    http.cookie;
    content:"Auth="; startswith;
    http.header_names;
    content:"|0d 0a|X-Csrf-Token|0d 0a|"; nocase;
    http.request_body;
    content:"|22|ipaddress|22|"; nocase;
    content:"|22|"; within:5;
    content:"|3a|"; within:5;
    content:"|3a|"; within:5;
    content:"|3a|"; within:5;
    pcre:"/^.{0,5}(?:[\x60\x3b\x7c\x26]|%60|%3b|%7c|%26|(?:[\x3c\x3e\x24]|%3c|%3e|%24)(?:\x28|%28))/R";
    reference:url,blog.leakix.net/2023/10/cisco-root-privesc/;
    reference:url,twitter.com/joel_land/status/1719708750741639539;
    reference:url,sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z;
    reference:cve,2023-20273;
    classtype:attempted-admin;
    sid:2049007; rev:1;
    metadata:affected_product Cisco_IOS, attack_target Networking_Equipment, created_at 2023_11_01, cve CVE_2023_20273, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_01, reviewed_at 2023_11_01, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
    target:dest_ip;
)