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CWE-782

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CWE-782

Exposed IOCTL with Insufficient Access Control

Variant
Draft

Description

The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL.

{"xhtml:p":["When an IOCTL contains privileged functionality and is exposed unnecessarily, attackers may be able to access this functionality by invoking the IOCTL. Even if the functionality is benign, if the programmer has assumed that the IOCTL would only be accessed by a trusted process, there may be little or no validation of the incoming data, exposing weaknesses that would never be reachable if the attacker cannot call the IOCTL directly.","The implementations of IOCTLs will differ between operating system types and versions, so the methods of attack and prevention may vary widely."]}

Related Weaknesses

CWE-781 (CanPrecede)

Common Consequences

Scope

Integrity
Availability
Confidentiality

Impact

Varies by Context

Potential Mitigations

Architecture and Design

In Windows environments, use proper access control for the associated device or device namespace. See References.

CVE-2009-2208

Operating system does not enforce permissions on an IOCTL that can be used to modify network settings.

CVE-2008-3831

Device driver does not restrict ioctl calls to its direct rendering manager.

CVE-2008-3525

ioctl does not check for a required capability before processing certain requests.

CVE-2008-0322

Chain: insecure device permissions allows access to an IOCTL, allowing arbitrary memory to be overwritten.

CVE-2007-4277

Chain: anti-virus product uses weak permissions for a device, leading to resultant buffer overflow in an exposed IOCTL.

CVE-2007-1400

Chain: sandbox allows opening of a TTY device, enabling shell commands through an exposed ioctl.

CVE-2006-4926

Anti-virus product uses insecure security descriptor for a device driver, allowing access to a privileged IOCTL.

CVE-1999-0728

Unauthorized user can disable keyboard or mouse by directly invoking a privileged IOCTL.

Applicable Platforms

C
C++

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