低危 qemu qemu 不加限制或调节的资源分配
CVE编号
CVE-2021-3527利用情况
暂无补丁情况
官方补丁披露时间
2021-05-27漏洞描述
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.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。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 | qemu | qemu | * | Up to (excluding) 2021-05-05 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | qemu | * | Up to (excluding) 6.0.0-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | qemu | * | Up to (excluding) 3.1.0-8.amzn2.0.10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | qemu | * | Up to (excluding) 1:3.1+dfsg-8+deb10u9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | qemu | * | Up to (excluding) 1:5.2+dfsg-11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | qemu | * | Up to (excluding) 1:5.2+dfsg-11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | qemu | * | Up to (excluding) 1:2.8+dfsg-6+deb9u15 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | qemu | * | Up to (excluding) 1:5.2+dfsg-11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | qemu-lang | * | Up to (excluding) 4.2.1-lp152.9.20.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | qemu-s390 | * | Up to (excluding) 5.2.0-103.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | oraclelinux-release | * | Up to (excluding) 4.2.1-11.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | libvirt-daemon-driver-storage-gluster | * | Up to (excluding) 1.16.2-4.0.1.module+el8.4.0+20319+6eb4347c | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | qemu | * | Up to (excluding) 3.1.1.1-57.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | qemu | * | Up to (excluding) 1:2.11+dfsg-1ubuntu7.37 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | qemu | * | Up to (excluding) 1:2.11+dfsg-1ubuntu7.37 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | qemu | * | Up to (excluding) 1:4.2-3ubuntu6.17 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | qemu | * | Up to (excluding) 1:5.2+dfsg-9ubuntu3.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | qemu | * | Up to (excluding) 1:6.0+dfsg-2expubuntu1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | qemu | * | Up to (excluding) 1:6.0+dfsg-2expubuntu1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.10 | qemu | * | Up to (excluding) 1:6.0+dfsg-2expubuntu1 | |||||
- 攻击路径 本地
- 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-770 | 不加限制或调节的资源分配 |
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