CVE-2021-32843
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I. Basic Information for CVE-2021-32843
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, `virtio.c` has is a call to `vc_cfgread` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit df0e46c7dbfd81a957d85e449ba41b52f6f7beb4.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
HyperKit 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HyperKit是Moby开源的一个用于在应用程序中嵌入虚拟机监控程序功能的工具包。 HyperKit 0.20210107及之前版本存在安全漏洞，该漏洞源于`virtio.c` 有一个对 `vc_cfgread` 的调用，它不检查 null，调用时会导致主机崩溃，从而导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-32843
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Same Patch Batch · moby · 2023-02-17 · 4 CVEs total
| CVE-2021-32845 | 7.7 HIGH | Moby HyperKit uninitialized memory use vtrnd pci_vtrnd_notify |
| CVE-2021-32846 | 7.7 HIGH | Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx |
| CVE-2021-32844 | 6.2 MEDIUM | HyperKit 代码问题漏洞 |
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V. Comments for CVE-2021-32843
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