CVE-2021-34864 — HIGH (8.8)

Vulnerability Description

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 low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the WinAppHelper component. The issue results from the lack of proper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13543.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Parallels	Parallels Desktop	16.1.3

Related Weaknesses (CWE)

CWE-284

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1000/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1000/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-34864?

CVE-2021-34864 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 low-privileged code...

How severe is CVE-2021-34864?

CVE-2021-34864 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34864?

Check the references section above for vendor advisories and patch information. Affected products include: Parallels Parallels Desktop.