alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"ET WEB_SPECIFIC_APPS phpBB Remote Code Execution Attempt"; flow:established,to_server; content:"/viewtopic.php?"; http_uri; pcre:"/highlight=.*?(\'|\%[a-f0-9]{4})(\.|\/|\\|\%[a-f0-9]{4}).+?(\'|\%[a-f0-9]{4})/Ui"; reference:url,secunia.com/advisories/15845/; reference:bugtraq,14086; reference:url,www.securiteam.com/unixfocus/6Z00R2ABPY.html; classtype:web-application-attack; sid:2002070; rev:9; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_08_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)