Resource management error in Xen - CVE-2020-15566
Published: July 9, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU29602
CSH Severity: Low
CVSS v4.0: 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:P/U:Clear
CVE-ID: CVE-2020-15566
CWE-ID: CWE-399
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling in event-channel port allocation in Xen. An attacker with access to guest operating system can consume more than 1023 event channels and crash the hypervisor.
How to mitigate CVE-2020-15566
Install updates from vendor's website.