CWE-781: Improper Address Validation in IOCTL with METHOD_NEITHER I/O Control Code
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product defines an IOCTL that uses METHOD_NEITHER for I/O, but it does not validate or incorrectly validates the addresses that are provided.
扩展描述
When an IOCTL uses the METHOD_NEITHER option for I/O control, it is the responsibility of the IOCTL to validate the addresses that have been supplied to it. If validation is missing or incorrect, attackers can supply arbitrary memory addresses, leading to code execution or a denial of service.
常见后果
影响范围: Integrity Availability Confidentiality
技术影响: Modify Memory Read Memory Execute Unauthorized Code or Commands DoS: Crash, Exit, or Restart
说明: An attacker may be able to access memory that belongs to another process or user. If the attacker can control the contents that the IOCTL writes, it may lead to code execution at high privilege levels. At the least, a crash can occur.
潜在缓解措施
阶段: Implementation
描述: If METHOD_NEITHER is required for the IOCTL, then ensure that all user-space addresses are properly validated before they are first accessed. The ProbeForRead and ProbeForWrite routines are available for this task. Also properly protect and manage the user-supplied buffers, since the I/O Manager does not do this when METHOD_NEITHER is being used. See References.
阶段: Architecture and Design
描述: If possible, avoid using METHOD_NEITHER in the IOCTL and select methods that effectively control the buffer size, such as METHOD_BUFFERED, METHOD_IN_DIRECT, or METHOD_OUT_DIRECT.
阶段: Architecture and Design Implementation
描述: If the IOCTL is part of a driver that is only intended to be accessed by trusted users, then use proper access control for the associated device or device namespace. See References.
观察示例
参考: CVE-2006-2373
Driver for file-sharing and messaging protocol allows attackers to execute arbitrary code.
参考: CVE-2009-0686
Anti-virus product does not validate addresses, allowing attackers to gain SYSTEM privileges.
参考: CVE-2009-0824
DVD software allows attackers to cause a crash.
参考: CVE-2008-5724
Personal firewall allows attackers to gain SYSTEM privileges.
参考: CVE-2007-5756
chain: device driver for packet-capturing software allows access to an unintended IOCTL with resultant array index error.
引入模式
| 阶段 | 说明 |
|---|---|
| Implementation | - |