CVE-2015-7358
high
CVSS v3
7.8
CVSS v2
7.2
VIR risk
7.8
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.
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: cve@mitre.org — https://veracrypt.codeplex.com/wikipage?title=Release%20Notes
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ciphershed | ciphershed | {"endIncluding":"0.7.5.0"} | |
| idrix | veracrypt | {"endIncluding":"1.14"} | |
| truecrypt | truecrypt | 7.0 | |
References
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-Drive-Letter-Symbolic-Link-Creation-Privilege-Escalation.html
- http://www.openwall.com/lists/oss-security/2015/09/22/7
- http://www.openwall.com/lists/oss-security/2015/09/24/3
- https://code.google.com/p/google-security-research/issues/detail?id=538
- https://veracrypt.codeplex.com/wikipage?title=Release%20Notes
- https://www.exploit-db.com/exploits/38403/
- http://packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-Drive-Letter-Symbolic-Link-Creation-Privilege-Escalation.html
- http://www.openwall.com/lists/oss-security/2015/09/22/7
- http://www.openwall.com/lists/oss-security/2015/09/24/3
- https://code.google.com/p/google-security-research/issues/detail?id=538
- https://veracrypt.codeplex.com/wikipage?title=Release%20Notes
- https://www.exploit-db.com/exploits/38403/
CWEs
CWE-264
Verify integrity in audit chain (admin only). AS-IS.