#VU77638 Out-of-bounds read in vCenter Server - CVE-2023-20895

Vulnerability identifier: #VU77638

Vulnerability risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-20895

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
vCenter Server
Server applications / Virtualization software

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in DCERPC protocol implementation. A remote attacker can send specially crafted traffic to the server to trigger an out-of-bounds read error and read contents of memory on the system. The obtain information can be used to bypass authentication process and compromise the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

vCenter Server: 7.0 U1c - 8.0.0

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External links
https://www.vmware.com/security/advisories/VMSA-2023-0014.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.