Vulnerability · Published Aug 25, 2020 · Assigned by zdi

CVE-2020-17391

Medium 6.5

In plain English

A medium-severity security flaw in Desktop from Parallels. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)0.5%top 55.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

This vulnerability allows local attackers to disclose information on affected installations of Parallels Desktop 15.1.3-47255. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handler for HOST_IOCTL_INIT_HYPERVISOR in the prl_hypervisor kext. The issue results from the exposure of dangerous method or function to the unprivileged user. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel. Was ZDI-CAN-10518.

Affected products (as reported)

Vendor	Product	Versions
Parallels	Desktop	15.1.3-47255

Weakness: CWE-749 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://kb.parallels.com/en/125013 x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-20-1009/ x_refsource_MISC