alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET WEB_SPECIFIC_APPS Possible DoubleQlik RCE via Path Traversal (CVE-2023-41266)";
flow:established,to_server;
http.method;
content:"POST";
http.header;
content:"X-Qlik-"; fast_pattern;
http.uri.raw;
content:"/resources/qmc/fonts/"; startswith;
content:".ttf"; endswith;
reference:url,praetorian.com/blog/doubleqlik-bypassing-the-original-fix-for-cve-2023-41265/;
reference:cve,2023-41266;
classtype:web-application-attack;
sid:2048366; rev:1;
metadata:affected_product Qlik_Sense_Enterprise, created_at 2023_09_29, cve CVE_2023_41266, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_29, reviewed_at 2023_09_29, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1083, mitre_technique_name File_And_Directory_Discovery;
target:dest_ip;
)