PT-2020-14946 · Parallels · Parallels Desktop

Meysam Firouzi + 1 · Published 2020-08-18 · Updated 2020-08-28 · CVE-2020-17395

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 15.1.4

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 prl naptd process. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this issue to escalate privileges and execute code in the context of the hypervisor.

Recommendations For Parallels Desktop version 15.1.4, at the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Integer Underflow

Weakness Enumeration

CWE-191

Related Identifiers

CVE-2020-17395

ZDI-20-1013

Affected Products

Parallels Desktop

References · 4

• https://kb.parallels.com/en/125013 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-17395 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-20-1013 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-17395 · Security Note