ET EXPLOIT Apache HTTP Server 2.4.49 - Path Traversal Attempt (CVE-2021-41773) M2

Query · suricata

flow:established,to_server;
http.uri.raw;
pcre:"/^\/(?:icons|cgi-bin)/";
content:"/.%2e/.%2e/.%2e/.%2e/";
target:dest_ip;
Raw source ET EXPLOIT Apache HTTP Server 2.4.49 - Path Traversal Attempt (CVE-2021-41773) M2 · 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) M2";
    flow:established,to_server;
    http.uri.raw;
    pcre:"/^\/(?:icons|cgi-bin)/";
    content:"/.%2e/.%2e/.%2e/.%2e/";
    reference:url,httpd.apache.org/security/vulnerabilities_24.html;
    reference:url,github.com/iilegacyyii/PoC-CVE-2021-41773/blob/main/CVE-2021-41773.py;
    reference:cve,2021-41773;
    classtype:attempted-admin;
    sid:2034125; 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;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.