ET INFO Wordpress Error, Cannot modify header information - headers already sent by

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
file.data;
content:"Cannot modify header information - headers already sent by"; within:500; fast_pattern;
Raw source ET INFO Wordpress Error, Cannot modify header information - headers already sent by · Suricata
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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 INFO Wordpress Error, Cannot modify header information - headers already sent by";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    file.data;
    content:"Cannot modify header information - headers already sent by"; within:500; fast_pattern;
    classtype:misc-activity;
    sid:2044446; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_06, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_06;
)

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