Vulnerability Description
The IsDriveLetterAvailable method in Driver/Ntdriver.c in TrueCrypt 7.0, VeraCrypt before 1.15, and CipherShed, when running on Windows, does not properly validate drive letter symbolic links, which allows local users to mount an encrypted volume over an existing drive letter and gain privileges via an entry in the /GLOBAL?? directory.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ciphershed | Ciphershed | <= 0.7.5.0 |
| Idrix | Veracrypt | <= 1.14 |
| Truecrypt | Truecrypt | 7.0 |
| Microsoft | Windows | All versions |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-DriThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2015/09/22/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/09/24/3Issue TrackingMailing ListThird Party Advisory
- https://code.google.com/p/google-security-research/issues/detail?id=538Third Party Advisory
- https://veracrypt.codeplex.com/wikipage?title=Release%20NotesRelease NotesVendor Advisory
- https://www.exploit-db.com/exploits/38403/Third Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-DriThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2015/09/22/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/09/24/3Issue TrackingMailing ListThird Party Advisory
- https://code.google.com/p/google-security-research/issues/detail?id=538Third Party Advisory
- https://veracrypt.codeplex.com/wikipage?title=Release%20NotesRelease NotesVendor Advisory
- https://www.exploit-db.com/exploits/38403/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2015-7358?
CVE-2015-7358 is a vulnerability with a CVSS score of 7.8 (HIGH). The IsDriveLetterAvailable method in Driver/Ntdriver.c in TrueCrypt 7.0, VeraCrypt before 1.15, and CipherShed, when running on Windows, does not properly validate drive letter symbolic links, which a...
How severe is CVE-2015-7358?
CVE-2015-7358 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-7358?
Check the references section above for vendor advisories and patch information. Affected products include: Ciphershed Ciphershed, Idrix Veracrypt, Truecrypt Truecrypt, Microsoft Windows.