CVE-2021-32847

Summary

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.

Affected Software

Weaknesses

• CWE-125: CWE-125 Out-of-bounds Read

ADP Enrichment

CVE Program Container

Additional References

• https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit/
• https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316
• https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit/
• https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316
• https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f

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