ET EXPLOIT Possible Pulse Secure VPN RCE Chain Stage 2 Inbound - Upload Malicious Config (CVE-2020-8260)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/dana-admin/cached/config/import.cgi";
http.referer;
content:"/dana-admin/cached/config/config.cgi?type=system"; fast_pattern;
xbits:isset,ET.2020_8260.1,track ip_src,expire 10;
xbits:set,ET.2020_8260.2,track ip_src,expire 10;
noalert;

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

Feeds into

  • 2 rules read ET.2020_8260.2 · view all
Raw source ET EXPLOIT Possible Pulse Secure VPN RCE Chain Stage 2 Inbound - Upload Malicious Config (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 Possible Pulse Secure VPN RCE Chain Stage 2 Inbound - Upload Malicious Config (CVE-2020-8260)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/dana-admin/cached/config/import.cgi";
    http.referer;
    content:"/dana-admin/cached/config/config.cgi?type=system"; fast_pattern;
    xbits:isset,ET.2020_8260.1,track ip_src,expire 10;
    xbits:set,ET.2020_8260.2,track ip_src,expire 10;
    noalert;
    reference:url,packetstormsecurity.com/files/160619/Pulse-Secure-VPN-Remote-Code-Execution.html;
    reference:cve,2020-8260;
    classtype:attempted-admin;
    sid:2033751; rev:2;
    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_10_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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