ET EXPLOIT Apache HTTP Server 2.4.49 - Path Traversal Attempt (CVE-2021-41773) M1

Query · suricata

flow:established,to_server;
http.uri.raw;
pcre:"/^\/(?:icons|cgi-bin)/";
content:"/.%2e/%2e%2e/%2e%2e/%2e%2e/";
target:dest_ip;
Raw source ET EXPLOIT Apache HTTP Server 2.4.49 - Path Traversal Attempt (CVE-2021-41773) M1 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Apache HTTP Server 2.4.49 - Path Traversal Attempt (CVE-2021-41773) M1";
    flow:established,to_server;
    http.uri.raw;
    pcre:"/^\/(?:icons|cgi-bin)/";
    content:"/.%2e/%2e%2e/%2e%2e/%2e%2e/";
    reference:url,httpd.apache.org/security/vulnerabilities_24.html;
    reference:url,twitter.com/HackerGautam/status/1445412108863041544;
    reference:cve,2021-41773;
    classtype:attempted-admin;
    sid:2034124; rev:5;
    metadata:affected_product Apache_HTTP_server, created_at 2021_10_05, cve CVE_2021_41773, deployment Perimeter, deployment Internet, deployment Internal, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_11_26, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1083, mitre_technique_name File_And_Directory_Discovery;
    target:dest_ip;
)

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