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Oracle's VirtualBox Vulnerability Leaked By Disgruntled Researcher

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An independent researcher who was disgruntled with traditional bug bounty methods took it upon himself to leak the details of an exploit in Oracle’s Virtual Box without first informing Oracle.

Sergey Zelenyukdiscovered a flaw that would allow him to escape from the virtual environment of the guest machine to reach the Ring 3 privilege layer used for running code from most user programs with the least privileges.

The vulnerability exists in VirtualBox 5.2.20 and prior versions.

The bug can be leveraged on virtual machines configured with the Intel PRO/1000 MT Desktop (82540EM) network adapter in Network Address Translation (NAT) mode.

“The E1000 has a vulnerability allowing an attacker with root/administrator privileges in a guest to escape to a host ring3.” Zelenyuk wrote in a technical write-up posted to his GitHubaccount in technical write-up. ”Then the attacker can use existing techniques to escalate privileges to ring 0 via /dev/vboxdrv.

Zelenyuksaid he likes VirtualBox...(continued)

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