PT-2021-19296 · Parallels · Parallels Desktop

Published 2021-04-21 · Updated 2021-05-06 · CVE-2021-31417

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Parallels Desktop version 15.1.4-47270

Description This issue allows local attackers to disclose sensitive information on affected installations. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this issue. The specific flaw exists within the Toolgate component, resulting from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other issues to escalate privileges and execute arbitrary code in the context of the hypervisor.

Recommendations For Parallels Desktop version 15.1.4-47270, consider disabling the Toolgate component as a temporary workaround until a patch is available. Restrict access to the Toolgate component to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

CVE-2021-31417

ZDI-21-426

Affected Products

Parallels Desktop

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-31417 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-426 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31417 · Vendor Advisory
• https://kb.parallels.com/en/125013 · Vendor Advisory
• https://t.me/cvenotify/14170 · Telegram Post