ZDI-CAN-21521: ZDI-23-1810: QEMU NVMe Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Wed Dec 20 2023(Updated: )
This vulnerability allows local attackers to disclose sensitive information on affected installations of QEMU. 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 NVMe virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the hypervisor.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-CAN-21521?
The severity of ZDI-CAN-21521 is classified as high due to its potential to allow local attackers to disclose sensitive information.
How do I fix ZDI-CAN-21521?
To fix ZDI-CAN-21521, update your QEMU installation to the latest version provided by your vendor.
Who is affected by ZDI-CAN-21521?
ZDI-CAN-21521 affects installations of QEMU, particularly when high-privileged code is executable by the attacker.
What type of information can be disclosed through ZDI-CAN-21521?
ZDI-CAN-21521 allows attackers to potentially disclose sensitive information from the affected QEMU installations.
What actions should be taken if ZDI-CAN-21521 is detected in my system?
If ZDI-CAN-21521 is detected, prioritize applying the relevant security patches and assess any potential exposure.
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- alias/ZDI-CAN-21521
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