ET WEB_SERVER Likely Malicious Request for /proc/<pid>/cmdline

Query · suricata

flow:established,to_server;
http.uri;
content:"proc/"; nocase;
content:"/cmdline"; nocase; endswith; fast_pattern;
pcre:"/proc\/\d+\/cmdline$/";
Raw source ET WEB_SERVER Likely Malicious Request for /proc/<pid>/cmdline · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> [$HTTP_SERVERS,$HOME_NET] any (
    msg:"ET WEB_SERVER Likely Malicious Request for /proc/<pid>/cmdline";
    flow:established,to_server;
    http.uri;
    content:"proc/"; nocase;
    content:"/cmdline"; nocase; endswith; fast_pattern;
    pcre:"/proc\/\d+\/cmdline$/";
    classtype:web-application-attack;
    sid:2041449; rev:2;
    metadata:attack_target Web_Server, created_at 2022_12_01, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_01;
)

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