Advisory Details

August 18th, 2020

Parallels Desktop Networking Out-Of-Bounds Access Privilege Escalation Vulnerability

CVE ID	CVE-2020-17397
CVSS SCORE	7.5, AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Parallels
AFFECTED PRODUCTS	Desktop
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the handling of network packets. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor.
ADDITIONAL DETAILS	Parallels has issued an update to correct this vulnerability. More details can be found at: https://kb.parallels.com/en/125013
DISCLOSURE TIMELINE	2020-06-24 - Vulnerability reported to vendor 2020-08-18 - Coordinated public release of advisory
CREDIT	ziming zhang from Codesafe Team of Legendsec at Qi'anxin Group

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