PT-2020-20343 · Parallels · Parallels Desktop

Reno Robert · Published 2020-03-13 · Updated 2020-05-04 · CVE-2020-8873

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Parallels Desktop version 15.1.2-47123

Description This issue allows local attackers to escalate privileges on affected installations. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this issue. The specific flaw exists within the xHCI component, resulting from the lack of proper locking when performing operations on an object. An attacker can leverage this issue to escalate privileges and execute code in the context of the hypervisor.

Recommendations For Parallels Desktop version 15.1.2-47123, consider disabling the xHCI component as a temporary workaround until a patch is available. Restrict access to the xHCI 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

Time Of Check To Time Of Use

Improper Privilege Management

Weakness Enumeration

CWE-367

CWE-269

Related Identifiers

CVE-2020-8873

ZDI-20-294

Affected Products

Parallels Desktop

References · 4

• https://zerodayinitiative.com/advisories/ZDI-20-294 · Security Note
• https://osv.dev/vulnerability/CVE-2020-8873 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8873 · Security Note
• https://t.me/cvenotify/2028 · Telegram Post