Headline

CVE-2021-34986: ZDI-22-385

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.5.0 (49183). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the Parallels Service. By creating a symbolic link, an attacker can abuse the service to execute a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13932.

2 years ago

CVE

Open in Source

#vulnerability

February 18th, 2022

Parallels Desktop Service Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability****ZDI-22-385
ZDI-CAN-13932

CVE ID

CVE-2021-34986

CVSS SCORE

7.8, (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

AFFECTED VENDORS

Parallels

AFFECTED PRODUCTS

Desktop

VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

ADDITIONAL DETAILS

Parallels has issued an update to correct this vulnerability. More details can be found at:
https://kb.parallels.com/en/125013

DISCLOSURE TIMELINE

2021-07-09 - Vulnerability reported to vendor
2022-02-18 - Coordinated public release of advisory

CREDIT

say2

BACK TO ADVISORIES

SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.