Advantech WebAccess File and Directory Information Exposure
The BWOCXRUN.BwocxrunCtrl.1 control contains a method named
“OpenUrlToBuffer.” This method takes a URL as a parameter and returns
its contents to the caller in JavaScript. The URLs are accessed in the
security context of the current browser session. The control does not
perform any URL validation and allows “file://” URLs that access the
local disk.
The method can be used to open a URL (including file URLs) and read
file URLs through JavaScript. This method could also be used to reach
any arbitrary URL to which the browser has access.
CVE の解決策
Advantech has created a new version (Version 7.2) that mitigates each
of the vulnerabilities described above. Users may download this version
from the following location at their web site: http://webaccess.advantech.com/downloads.php?item=software
For additional information about WebAccess, please visit the following Advantech web site: http://webaccess.advantech.com/
Insertion of Sensitive Information into Externally-Accessible File or Directory The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.
Exposure of Sensitive Information to an Unauthorized Actor The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.