IQID:23814 HTTP Pentaho Business Analytics Pentaho Business Server 9.1 Filename Bypass S

IQID: 23814 - November 2021

Pentaho allows users to upload various files of different file types. The upload service is implemented under the /pentaho/UploadService endpoint. The file types allowed by the application are csv, dat, txt, tar, zip, tgz, gz, gzip. When uploading a file with an extension other than the allowed file types, the application responds with the error message of UploadFileServlet.ERROR_0011 - File type not allowed. Allowable types are csv,dat,txt,tar,zip,tgz,gz,gzip. However, the file extension check can be bypassed by including a single dot "." at the end of the filename.

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