CVE-2015-7358
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.21% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- ciphershed/ciphershed · idrix/veracrypt · truecrypt/truecrypt
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-Drive-Letter-Symbolic-Link-Creation-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2015/09/22/7Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/09/24/3Issue Tracking, Mailing List, Third Party Advisory
- https://code.google.com/p/google-security-research/issues/detail?id=538Third Party Advisory
- https://veracrypt.codeplex.com/wikipage?title=Release%20NotesRelease Notes, Vendor Advisory
- https://www.exploit-db.com/exploits/38403/Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-Drive-Letter-Symbolic-Link-Creation-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2015/09/22/7Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/09/24/3Issue Tracking, Mailing List, Third Party Advisory
- https://code.google.com/p/google-security-research/issues/detail?id=538Third Party Advisory
- https://veracrypt.codeplex.com/wikipage?title=Release%20NotesRelease Notes, Vendor Advisory
- https://www.exploit-db.com/exploits/38403/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.