Permissions, Privileges, and Access Controls in Xen - CVE-2023-46835
Published: November 15, 2023
Vulnerability identifier: #VU83162
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-46835
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a remote guest to gain access to sensitive information.
The vulnerability exists due to improperly imposed security restrictions caused by a mismatch in IOMMU quarantine page table levels. A device in quarantine mode can access data from previous quarantine page table usages, possibly leaking data used by previous domains that also had the device assigned.
How to mitigate CVE-2023-46835
Install updates from vendor's website.