GPL SQL dbms_repcat.compare_old_values buffer overflow attempt

Query · suricata

flow:to_server,established;
content:"dbms_repcat.compare_old_values"; nocase; fast_pattern;
pcre:"/((\w+)[\r\n\s]*\x3a=[\r\n\s]*(\x27[^\x27]{1024,}\x27|\x22[^\x22]{1024,}\x22)[\r\n\s]*\x3b.*operation[\r\n\s]*=>[\r\n\s]*\2|operation\s*=>\s*(\x27[^\x27]{1024,}|\x22[^\x22]{1024,})|\(\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]{1024,}|\x22[^\x22]{1024,}))/si";
Raw source GPL SQL dbms_repcat.compare_old_values buffer overflow attempt · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $SQL_SERVERS $ORACLE_PORTS (
    msg:"GPL SQL dbms_repcat.compare_old_values buffer overflow attempt";
    flow:to_server,established;
    content:"dbms_repcat.compare_old_values"; nocase; fast_pattern;
    pcre:"/((\w+)[\r\n\s]*\x3a=[\r\n\s]*(\x27[^\x27]{1024,}\x27|\x22[^\x22]{1024,}\x22)[\r\n\s]*\x3b.*operation[\r\n\s]*=>[\r\n\s]*\2|operation\s*=>\s*(\x27[^\x27]{1024,}|\x22[^\x22]{1024,})|\(\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]*\x27|\x22[^\x22]+\x22)\s*,\s*(\x27[^\x27]{1024,}|\x22[^\x22]{1024,}))/si";
    reference:url,www.appsecinc.com/Policy/PolicyCheck91.html;
    classtype:attempted-user;
    sid:2102605; rev:5;
    metadata:created_at 2010_09_23, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

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