This vulnerability allows local attackers to escalate privileges 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_SET_KERNEL_SYMBOLS in the prl_hypervisor kext. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-10519.
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
Link | Tags |
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https://kb.parallels.com/en/125013 | vendor advisory |
https://www.zerodayinitiative.com/advisories/ZDI-20-1010/ | vdb entry third party advisory |