CVE-2021-32845

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of `qnotify` at `pci_vtrnd_notify` fails to check the return value of `vq_getchain`. This leads to `struct iovec iov;` being uninitialized and used to read memory in `len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len);` when an attacker is able to make `vq_getchain` fail. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit 41272a980197917df8e58ff90642d14dec8fe948.

CVSS v3.0 7.8 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948	Patch
https://github.com/moby/hyperkit/pull/313	Patch
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:*

Information

Published : 2023-02-17 15:15

Updated : 2023-02-28 12:29

NVD link : CVE-2021-32845

Mitre link : CVE-2021-32845

JSON object : View

CWE

CWE-908

Use of Uninitialized Resource

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Products Affected

mobyproject

hyperkit

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