#VU46978 Resource management error in Xen - CVE-2020-25597
Published: September 23, 2020
Vulnerability identifier: #VU46978
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-2020-25597
CWE-ID: CWE-399
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 a login error in the handling of event channel operations in Xen, which assumes that an event channel, once valid, will not become invalid over the life time of a guest.An unprivileged guest may be able to crash Xen by resetting of all event channels.
Remediation
Install updates from vendor's website.