Vulnerability Report

CVE-2021-32843

Title: Mobyproject Hyperkit Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2021-32843.

CWE Category CWE-476
Published Date Feb 17, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 6.2 CVSS v3.1
Exploit Probability (EPSS)
0.06%

Vulnerability Summary

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.

Impacted Vendors

M
mobyproject 1

Reference Links

https://github.com/moby/hyperkit/commit/df0e46c7dbfd81a957d85e449ba41b52f6f7beb4 https://github.com/moby/hyperkit/pull/313 https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ https://github.com/moby/hyperkit/commit/df0e46c7dbfd81a957d85e449ba41b52f6f7beb4 https://github.com/moby/hyperkit/pull/313 https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.2
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.5
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-32843 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.