ET EXPLOIT Klog Server Command Injection Inbound (CVE-2021-3317)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/async.php?action=";
content:"&source=|3b|"; fast_pattern;
Raw source ET EXPLOIT Klog Server Command Injection Inbound (CVE-2021-3317) · 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 -> [$HTTP_SERVERS,$HOME_NET] any (
    msg:"ET EXPLOIT Klog Server Command Injection Inbound (CVE-2021-3317)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/async.php?action=";
    content:"&source=|3b|"; fast_pattern;
    reference:cve,2021-3317;
    classtype:attempted-admin;
    sid:2032638; rev:1;
    metadata:attack_target Server, created_at 2021_04_09, cve CVE_2021_3317, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_09, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
)

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