#VU17899 Resource management error in Xen - CVE-2019-17348
Published: March 5, 2019 / Updated: July 28, 2020
Vulnerability identifier: #VU17899
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green
CVE-ID: CVE-2019-17348
CWE-ID: CWE-399
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient TLB flushing when using PCID on 64-bit x86 PV guest systems. A local user with access to guest operating system can use a specially crafted program to crash the Xen host.
Remediation
Apply the following patches: