#VU17900 Permissions, Privileges, and Access Controls in Xen - CVE-2019-17347
Published: March 5, 2019 / Updated: July 28, 2020
Vulnerability identifier: #VU17900
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-17347
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 local user to escalate privileges on the guest system.
The vulnerability exists due to incorrect implementation of the hardware supported fsgsbase feature. A local user or process on 64bit PV guest system can execute arbitrary code on the guest operating system with escalated privileges.
This vulnerability affects 64bit systems that are running on Intel IvyBridge and later hardware, and AMD Steamroller and later hardware.
Remediation
Apply the following patches: