中危 Linux kernel 授权问题漏洞（CVE-2021-4197）
CVE编号
CVE-2021-4197利用情况
暂无补丁情况
官方补丁披露时间
2022-03-24漏洞描述
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在授权问题漏洞，攻击者可利用该漏洞通过Cgroup Fd Writing绕过Linux内核的限制以提升权限。解决建议
目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://vigilance.fr/vulnerability/Linux-kernel-privilege-escalation-via-Cgroup-Fd-Writing-37262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 | |||||||||
| 应用 | linux | linux_kernel | * | Up to (excluding) 5.17 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | kernel | * | Up to (excluding) 4.14.268-205.500.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | kernel | * | Up to (excluding) 4.14.268-139.500.amzn1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | kernel | * | Up to (excluding) 4.18 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * | Up to (excluding) 4.19.249-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * | Up to (excluding) 5.10.113-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | linux | * | Up to (excluding) 5.15.15-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux | * | Up to (including) 4.9.228-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * | Up to (excluding) 5.15.15-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | kernel | * | Up to (excluding) 5.15.14-100.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_35 | kernel | * | Up to (excluding) 5.15.14-200.fc35 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.23.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.14.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.23.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.14.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kernel | * | Up to (excluding) 5.3.18-150300.59.43.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.4 | kernel | * | Up to (excluding) 5.3.18-150300.59.43.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | kernel | * | Up to (excluding) 5.4.17-2136.308.7.el7uek | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | kernel | * | Up to (excluding) 4.12.14-122.110.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | linux-hwe-5.4 | * | Up to (excluding) 5.4.0-1078.84~18.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | linux-bluefield | * | Up to (excluding) 5.4.0-1083.87 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | linux | * | Up to (excluding) 5.13.0-37.42 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_c | kernel | * | Up to (excluding) 4.19.0-91.77.98.uelc20 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 越权影响
- EXP成熟度 未验证
- 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 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-287 | 认证机制不恰当 |
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