Description
The (1) IsVolumeAccessibleByCurrentUser and (2) MountDevice methods in Ntdriver.c in TrueCrypt 7.0, VeraCrypt before 1.15, and CipherShed, when running on Windows, do not check the impersonation level of impersonation tokens, which allows local users to impersonate a user at SecurityIdentify level and gain access to other users' mounted encrypted volumes.
References
- https://code.google.com/p/google-security-research/issues/detail?id=537
- https://veracrypt.codeplex.com/wikipage?title=Release%20Notes
- http://packetstormsecurity.com/files/133877/Truecrypt-7-Privilege-Escalation.html
- [oss-security] 20150924 Re: CVE Request - TrueCrypt 7.1a and VeraCrypt 1.14 Local Elevation of Privilege mailing-list
- [oss-security] 20150922 CVE Request - TrueCrypt 7.1a and VeraCrypt 1.14 Local Elevation of Privilege mailing-list