低危 xen xen 特权管理不恰当
CVE编号
CVE-2021-28692利用情况
暂无补丁情况
官方补丁披露时间
2021-06-30漏洞描述
inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPU(s) issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU spin-waits for the completion of the most recently issued command(s). Some of these waiting loops try to apply a timeout to fail overly-slow commands. The course of action upon a perceived timeout actually being detected is inappropriate: - on Intel hardware guests which did not originally cause the timeout may be marked as crashed, - on AMD hardware higher layer callers would not be notified of the issue, making them continue as if the IOMMU operation succeeded.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://security.gentoo.org/glsa/202107-30 | |
| https://xenbits.xenproject.org/xsa/advisory-373.txt |
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 | alpine_3.11 | xen | * | Up to (excluding) 4.13.3-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | xen | * | Up to (excluding) 4.13.3-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | xen | * | Up to (excluding) 4.14.1-r3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | xen | * | Up to (excluding) 4.15.0-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | xen | * | Up to (excluding) 4.11.4+107-gef32c7afa2-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | xen | * | Up to (excluding) 4.14.2+25-gb6a8c4f72d-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | xen | * | Up to (excluding) 4.14.2+25-gb6a8c4f72d-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | xen | * | Up to (including) 4.8.5.final+shim4.10.4-1+deb9u12 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | xen | * | Up to (excluding) 4.14.2+25-gb6a8c4f72d-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | xen-doc | * | Up to (excluding) 4.14.2-2.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | xen-doc | * | Up to (excluding) 4.14.2-2.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | xen-tools | * | Up to (excluding) 4.13.3_02-lp152.2.27.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | xen-tools | * | Up to (excluding) 4.14.2_04-3.9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | xen | * | Up to (excluding) 4.12.4_12-3.49.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | xen | xen | * | From (including) 3.2.0 | |||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 普通权限
- 影响范围 有限影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 DoS
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-269 | 特权管理不恰当 |
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