Untrusted Pointer Dereference in Parallels Desktop - CVE-2020-17392
Published: August 19, 2020
Vulnerability identifier: #VU45765
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-17392
CWE-ID: CWE-822
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Parallels
Affected software:
Parallels Desktop
Parallels Desktop
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to untrusted pointer dereference error when handling HOST_IOCTL_SET_KERNEL_SYMBOLS in the prl_hypervisor kext. A local user to can run a specially crafted program to trigger pointer dereference and execute arbitrary code on the system in the context of the kernel.
How to mitigate CVE-2020-17392
Install updates from vendor's website.