Vulnerability in Ciphershed
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 an existing drive letter and gain privileges via an entry in the /GLOBAL?? directory.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Ciphershed
- Idrix Veracrypt
- Microsoft Windows
- Truecrypt — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- veracrypt.codeplex.com/wikipage (Release Notes, Vendor Advisory)
- www.exploit-db.com/exploits/38403/ (VDB Entry, Third Party Advisory, exploit)
- www.openwall.com/lists/oss-security/2015/09/24/3 (mailing-list, Mailing List, Third Party Advisory, Issue Tracking)
- packetstormsecurity.com/files/133878/Truecrypt-7-Derived-Code-Windows-Drive-Let… (VDB Entry, Third Party Advisory)
- www.openwall.com/lists/oss-security/2015/09/22/7 (mailing-list, Mailing List, Third Party Advisory)
- code.google.com/p/google-security-research/issues/detail (Third Party Advisory)
Frequently asked questions
- What is CVE-2015-7358?
- CVE-2015-7358 is a high-severity vulnerability in Ciphershed, classified under CWE-264. CVSS score: 7.8/10. Published 2017-10-03.
- How severe is CVE-2015-7358?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2015-7358 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.