ZDI-21-250: VMware ESXi SLP Heap-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of VMware ESXi. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of SLP messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the SLP daemon.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| VMware ESXi and Horizon DaaS |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-250?
ZDI-21-250 is considered a critical vulnerability due to its potential for remote code execution without authentication.
How do I fix ZDI-21-250?
To fix ZDI-21-250, apply the latest security patches provided by VMware for ESXi.
What type of attack is possible with ZDI-21-250?
ZDI-21-250 allows network-adjacent attackers to execute arbitrary code on affected VMware ESXi installations.
Is authentication required to exploit ZDI-21-250?
No, authentication is not required to exploit the vulnerability ZDI-21-250.
Which software is affected by ZDI-21-250?
The vulnerability ZDI-21-250 specifically affects VMware ESXi installations.
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