CVE-2021-34856

Summary

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). 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 virtio-gpu virtual device. 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 arbitrary code in the context of the hypervisor. Was ZDI-CAN-13581.

Affected Software

Weaknesses

• CWE-119: CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

ADP Enrichment

CVE Program Container

Additional References

• https://kb.parallels.com/125013
• https://www.zerodayinitiative.com/advisories/ZDI-21-938/

References

• https://kb.parallels.com/125013
• https://www.zerodayinitiative.com/advisories/ZDI-21-938/

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