PT-2020-20344 · Parallels · Parallels Desktop

Reno Robert · Published 2020-03-13 · Updated 2020-05-04 · CVE-2020-8874

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:L/AC:H/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 validation of user-supplied data, which can cause an integer overflow before allocating a buffer. This can be leveraged 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

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2020-8874

ZDI-20-295

Affected Products

Parallels Desktop

References · 4

• https://zerodayinitiative.com/advisories/ZDI-20-295 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-8874 · Security Note
• https://osv.dev/vulnerability/CVE-2020-8874 · Vendor Advisory
• https://t.me/cvenotify/2029 · Telegram Post