#VU46970 Race condition in Xen - CVE-2020-25604
Published: September 23, 2020
Vulnerability identifier: #VU46970
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/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-2020-25604
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a remote user to perform a denial of service (Dos) attack.
The vulnerability exists due to a race condition when migrating timers between x86 HVM vCPU-s in Xen. A remote user on a guest operating system can run a specially crafted program to crash the hypervisor.
Remediation
Install updates from vendor's website.