IDrive before 6.7.3.19 on Windows installs by default to %PROGRAMFILES(X86)%\IDriveWindows with weak folder permissions granting any user modify permission (i.e., NT AUTHORITY\Authenticated Users:(OI)(CI)(M)) to the contents of the directory and its sub-folders. In addition, the program installs a service called IDriveService that runs as LocalSystem. Thus, any standard user can escalate privileges to NT AUTHORITY\SYSTEM by substituting the service's binary with a malicious one.
During installation, installed file permissions are set to allow anyone to modify those files.
Link | Tags |
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https://www.idrive.com/release-info#win | vendor advisory |
https://github.com/active-labs/Advisories/blob/master/2020/ACTIVE-2020-004.md | third party advisory |