ET EXPLOIT Sophos Web Appliance Pre-Auth Command Injection Attempt (CVE-2023-1671)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"|2f|index|2e|php|3f|c|3d|blocked|26|action|3d|continue"; bsize:36;
http.request_body;
content:"args_reason=filetypewarn&url="; startswith; fast_pattern;
content:"&filetype=";
content:"&user_encoded=";
Raw source ET EXPLOIT Sophos Web Appliance Pre-Auth Command Injection Attempt (CVE-2023-1671) · 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 any (
    msg:"ET EXPLOIT Sophos Web Appliance Pre-Auth Command Injection Attempt (CVE-2023-1671)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"|2f|index|2e|php|3f|c|3d|blocked|26|action|3d|continue"; bsize:36;
    http.request_body;
    content:"args_reason=filetypewarn&url="; startswith; fast_pattern;
    content:"&filetype=";
    content:"&user_encoded=";
    reference:url,sophos.com/en-us/security-advisories/sophos-sa-20230404-swa-rce;
    classtype:attempted-admin;
    sid:2049632; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_11, cve CVE_2023_1671, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag cve_2023_1671, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_11, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
)

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