insyde kernel 检查时间与使用时间(toctou)的竞争条件

CVE编号

CVE-2022-30283

利用情况

暂无

补丁情况

N/A

披露时间

2022-11-16

漏洞描述

In UsbCoreDxe, tampering with the contents of the USB working buffer using DMA while certain USB transactions are in process leads to a TOCTOU problem that could be used by an attacker to cause SMRAM corruption and escalation of privileges The UsbCoreDxe module creates a working buffer for USB transactions outside of SMRAM. The code which uses can be inside of SMM, making the working buffer untrusted input. The buffer can be corrupted by DMA transfers. The SMM code code attempts to sanitize pointers to ensure all pointers refer to the working buffer, but when a pointer is not found in the list of pointers to sanitize, the current action is not aborted, leading to undefined behavior. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in: Kernel 5.0: Version 05.09. 21 Kernel 5.1: Version 05.17.21 Kernel 5.2: Version 05.27.21 Kernel 5.3: Version 05.36.21 Kernel 5.4: Version 05.44.21 Kernel 5.5: Version 05.52.21 https://www.insyde.com/security-pledge/SA-2022063

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2022063

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.0	Up to (excluding) 5.0.05.09.21
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.1	Up to (excluding) 5.1.05.17.21
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.2	Up to (excluding) 5.2.05.27.21
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.3	Up to (excluding) 5.3.05.36.21
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.4	Up to (excluding) 5.4.05.44.21
	运行在以下环境
	系统	insyde	kernel	*	From (including) 5.5	Up to (excluding) 5.5.05.52.21

CVSS3评分 7.5

• 攻击路径 本地
• 攻击复杂度 高
• 权限要求 高
• 影响范围 已更改
• 用户交互 无
• 可用性 高
• 保密性 高
• 完整性 高

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CWE-ID	漏洞类型
CWE-367	检查时间与使用时间(TOCTOU)的竞争条件

Exp相关链接

- avd.aliyun.com