CVE编号
CVE-2021-3638利用情况
暂无补丁情况
官方补丁披露时间
2022-03-04漏洞描述
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, 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。
参考链接 |
|
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1979858 | |
| https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html | |
| https://security.netapp.com/advisory/ntap-20220407-0003/ | |
| https://ubuntu.com/security/CVE-2021-3638 |
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 | * |
From (including) 4.0.0 |
Up to (including) 6.1.0 |
||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | qemu | * |
Up to (excluding) 1:5.2+dfsg-11+deb11u1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | qemu | * |
Up to (excluding) 6.1+dfsg-5 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | qemu | * |
Up to (excluding) 6.1+dfsg-5 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | qemu | * |
Up to (excluding) 6.4.20-1.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | qemu | * |
Up to (excluding) 6.4.20-1.fc34 |
|||||
- 攻击路径 远程
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 传输被破坏
- 服务器危害 DoS
- 全网数量 N/A
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