Vulnerability Report

CVE-2021-32847

Title: Mobyproject Hyperkit Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2021-32847.

CWE Category CWE-125
Published Date Feb 20, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.1 CVSS v3.1
Exploit Probability (EPSS)
0.03%

Vulnerability Summary

CVE-2021-32847: 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.

Impacted Vendors

M
mobyproject 1

Reference Links

https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316 https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f 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 https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit/
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.5
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-32847 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:C/C:H/I:N/A:N

Affected Stack

No specific products linked.