PT-2020-14943 · Parallels · Parallels Desktop

Reno Robert · Published 2020-08-18 · Updated 2020-08-28 · CVE-2020-17392

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Parallels Desktop version 15.1.3-47255

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 handler for HOST IOCTL SET KERNEL SYMBOLS in the prl hypervisor kext. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this issue to escalate privileges and execute code in the context of the kernel.

Recommendations For Parallels Desktop version 15.1.3-47255, at the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Untrusted Pointer Dereference

Weakness Enumeration

CWE-822

Related Identifiers

CVE-2020-17392

ZDI-20-1010

Affected Products

Parallels Desktop

References · 4

• https://zerodayinitiative.com/advisories/ZDI-20-1010 · Security Note
• https://kb.parallels.com/en/125013 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-17392 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-17392 · Security Note