#VU85929 Permissions, Privileges, and Access Controls in Xen - CVE-2023-46839
Published: January 31, 2024
Vulnerability identifier: #VU85929
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-46839
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a malicious guest to gain access to sensitive information.
The vulnerability exists due to an error in phantom functions implementation for PCI devices. Under certain circumstances a malicious guest assigned a PCI device with phantom functions may be able to access memory from a previous owner of the device.
Remediation
Install updates from vendor's website.