NULL pointer dereference in Moby Hyperkit
CVE-2021-32843
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.
EPSS: 0.002 (14.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Moby Hyperkit — versions 0.20210107
- Mobyproject Hyperkit
Weakness classification (CWE)
References
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (Patch)
- security-advisories@github.com (Patch)
Frequently asked questions
- What is CVE-2021-32843?
- CVE-2021-32843 is a medium-severity vulnerability in Moby Hyperkit, classified under NULL Pointer Dereference. CVSS score: 6.2/10. Published 2023-02-17.
- How severe is CVE-2021-32843?
- Medium severity. CVSS v3 base score is 6.2 out of 10.