Information disclosure in Parallels Desktop

Published: 2020-08-19

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-17393 CVE-2020-17390
CWE-ID	CWE-20 CWE-125
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Parallels Desktop Operating systems & Components / Operating system package or component
Vendor	Parallels

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU45766

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-17393

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input within the prl_hypervisor kext. A local user can pass specially crafted input to the application and gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Parallels Desktop: 15.0.0 (46967) - 15.1.3 (47255)

External links

http://www.zerodayinitiative.com/advisories/ZDI-20-1011/
http://kb.parallels.com/en/125013

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU45763