Vulnerability identifier: #VU31984
Vulnerability risk: Medium
CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-835
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Xen
Server applications /
Virtualization software
Vendor: Xen Project
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
An issue was discovered in Xen through 4.12.x allowing Arm domU attackers to cause a denial of service (infinite loop) involving a compare-and-exchange operation.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Xen: 4.8.0 - 4.12.0
External links
http://xenbits.xen.org/xsa/advisory-295.html
http://seclists.org/bugtraq/2020/Jan/21
http://www.debian.org/security/2020/dsa-4602
http://xenbits.xen.org/xsa/advisory-295.html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.