ET EXPLOIT Pulse Secure VPN RCE Chain Stage 3 Inbound - Execute Mal Config Trigger, PoC Based (CVE-2020-8260)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/dana-na/auth/setcookie.cgi"; fast_pattern;
http.header;
pcre:"/^[A-Z]{8}\x3a/m";
xbits:isset,ET.2020_8260.2,track ip_src,expire 10;

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 Pulse Secure VPN RCE Chain Stage 3 Inbound - Execute Mal Config Trigger, PoC Based (CVE-2020-8260) · 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 -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Pulse Secure VPN RCE Chain Stage 3 Inbound - Execute Mal Config Trigger, PoC Based (CVE-2020-8260)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/dana-na/auth/setcookie.cgi"; fast_pattern;
    http.header;
    pcre:"/^[A-Z]{8}\x3a/m";
    xbits:isset,ET.2020_8260.2,track ip_src,expire 10;
    reference:url,packetstormsecurity.com/files/160619/Pulse-Secure-VPN-Remote-Code-Execution.html;
    reference:cve,2020-8260;
    classtype:attempted-admin;
    sid:2033753; rev:1;
    metadata:affected_product Pulse_Secure, attack_target Server, created_at 2021_08_20, cve CVE_2020_8260, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_08_20, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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