Vulnerability Monitor

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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.

Published

2023-02-17T23:15:11.963

Last Modified

2024-11-21T06:07:52.230

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.7 (HIGH)

Weaknesses

Type: Secondary
CWE-908
Type: Primary
CWE-252

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mobyproject	hyperkit	≤ 0.20210107	Yes

References

https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948 Patch ([email protected])
https://github.com/moby/hyperkit/pull/313 Patch ([email protected])
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ Third Party Advisory ([email protected])
https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/moby/hyperkit/pull/313 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)