ET EXPLOIT Microsoft Sharepoint WebPartPagesWebService Authenticated Remote Code Execution (CVE-2023-21742)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/webpartpages.asmx";
http.request_body;
content:"ConvertWebPartFormat"; fast_pattern;
content:"SelectUrl|3d 22|";
pcre:"/^[a-z]+\x3a\x2f{2}/R";
target:dest_ip;
Raw source ET EXPLOIT Microsoft Sharepoint WebPartPagesWebService Authenticated Remote Code Execution (CVE-2023-21742) · 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 -> $HOME_NET any (
    msg:"ET EXPLOIT Microsoft Sharepoint WebPartPagesWebService Authenticated Remote Code Execution (CVE-2023-21742)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/webpartpages.asmx";
    http.request_body;
    content:"ConvertWebPartFormat"; fast_pattern;
    content:"SelectUrl|3d 22|";
    pcre:"/^[a-z]+\x3a\x2f{2}/R";
    reference:url,github.com/ohnonoyesyes/CVE-2023-21742;
    classtype:attempted-user;
    sid:2063365; rev:1;
    metadata:affected_product Microsoft_Sharepoint, attack_target Server, created_at 2025_07_09, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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