PT-2022-10379 · Parallels · Parallels Desktop

Say2 · Published 2022-02-18 · Updated 2022-07-22 · CVE-2021-34986

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Parallels Desktop version 16.5.0

Description This issue allows local attackers to escalate privileges on affected installations. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this issue. 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 issue to escalate privileges and execute arbitrary code in the context of root.

Recommendations For Parallels Desktop version 16.5.0, at the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2021-34986

ZDI-22-385

Affected Products

Parallels Desktop

References · 8

• https://kb.parallels.com/en/125013 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-385 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34986 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34986 · Vendor Advisory
• https://t.me/cvenotify/33205 · Telegram Post
• https://t.me/cvenotify/33608 · Telegram Post
• https://t.me/cibsecurity/46366 · Telegram Post
• https://t.me/cvenotify/33176 · Telegram Post