CVE-2021-32847 Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx
A malicious guest can trigger uninitialized memory use in HyperKit to disclose host memory, requiring a patch to prevent data leakage.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32847?
CVE-2021-32847 is a high-severity vulnerability in moby hyperkit, published on 20 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior, a malicious guest can trigger a vulnerability in the host by abusing the disk driver that may lead to the disclosure of the host memory into the virtualized guest. This issue is fixed in commit cf60095a4d8c3cb2e182a14415467afd356e982f.
Weakness: CWE-125
Which versions are affected by CVE-2021-32847?
It affects 1 product.
Products include Mobyproject Hyperkit.
How do I fix CVE-2021-32847?
No fix has been published for CVE-2021-32847 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-32847 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-32847 exists.
Other vulnerabilities in moby hyperkit
Sources
Also known as GHSA-gpgx-6j76-jh6m.