CVE-2015-7359

Truecrypt 7 Privilege Escalation

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Los métodos (1) IsVolumeAccessibleByCurrentUser y (2) MountDevice en Ntdriver.c en TrueCrypt 7.0; VeraCrypt, en versiones anteriores a la 1.15; y CipherShed, cuando se ejecutan en Windows, no comprueban el nivel de suplantación de los tokens de suplantación, lo que permite que los usuarios locales suplanten a un usuario a nivel de SecurityIdentify y obtengan acceso a los volúmenes cifrados montados de otros usuarios.

The Windows driver used by projects derived from Truecrypt 7 (verified in Veracrypt and CipherShed) are vulnerable to a local elevation of privilege attack by checking process of impersonation token which allow a user to inspect and potentially manipulate other users mounted encrypted volumes on the same machine.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-09-24 CVE Reserved
2015-10-06 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (5)

URL	Tag	Source
http://packetstormsecurity.com/files/133877/Truecrypt-7-Privilege-Escalation.html	Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/09/22/7	Mailing List
http://www.openwall.com/lists/oss-security/2015/09/24/3	Issue Tracking
https://code.google.com/p/google-security-research/issues/detail?id=537	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://veracrypt.codeplex.com/wikipage?title=Release%20Notes	2021-06-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ciphershed Search vendor "Ciphershed"	Ciphershed Search vendor "Ciphershed" for product "Ciphershed"	<= 0.7.5.0 Search vendor "Ciphershed" for product "Ciphershed" and version " <= 0.7.5.0"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	*	-	Safe
Idrix Search vendor "Idrix"	Veracrypt Search vendor "Idrix" for product "Veracrypt"	<= 1.14 Search vendor "Idrix" for product "Veracrypt" and version " <= 1.14"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	*	-	Safe
Truecrypt Search vendor "Truecrypt"	Truecrypt Search vendor "Truecrypt" for product "Truecrypt"	7.0 Search vendor "Truecrypt" for product "Truecrypt" and version "7.0"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	*	-	Safe