CVE-2021-34856

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the virtio-gpu virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13581.

CVSS v3 8.8 HIGH
CVSS v2.0 4.6 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://kb.parallels.com/125013	Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-938/	Third Party Advisory VDB Entry
https://kb.parallels.com/125013	Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-938/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:parallels:parallels_desktop:16.1.3:*:*:*:*:macos:*:*

History

21 Nov 2024, 06:11

Type	Values Removed	Values Added
References	~~() https://kb.parallels.com/125013 - Patch, Vendor Advisory~~	() https://kb.parallels.com/125013 - Patch, Vendor Advisory
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-21-938/ - Third Party Advisory, VDB Entry~~	() https://www.zerodayinitiative.com/advisories/ZDI-21-938/ - Third Party Advisory, VDB Entry

Information

Published : 2021-10-25 17:15

Updated : 2024-11-21 06:11

NVD link : CVE-2021-34856

Mitre link : CVE-2021-34856

CVE.ORG link : CVE-2021-34856

JSON object : View

Products Affected

parallels

parallels_desktop

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-787

Out-of-bounds Write

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