CVE-2023-34048 vulnerability in VMware Products
Published on October 25, 2023
vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.
Known Exploited Vulnerability
This VMware vCenter Server Out-of-Bounds Write Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol that allows an attacker to conduct remote code execution.
The following remediation steps are recommended / required by February 12, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2023-34048 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2023-34048 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2023-34048
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Affected Versions
VMware vCenter Server:- Version 8.0 and below 8.0U2 is affected.
- Version 7.0 and below 7.0U3o is affected.
- Version 5.x is affected.
- Version 4.x is affected.
- Version 7.0 and below 7.0U3o is affected.
- Version 8.0 and below 8.0U2 is affected.
- Version 4.0 and below KB88287 is affected.
- Version 5.0 and below KB88287 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.