#VU63776 Integer overflow in QEMU - CVE-2021-20203

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Main Vulnerability Database Vulnerabilities #VU63776

#VU63776 Integer overflow in QEMU - CVE-2021-20203

Published: May 30, 2022


Vulnerability identifier: #VU63776
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-20203
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
QEMU
Software vendor:
QEMU

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to integer overflow in the vmxnet3 NIC emulator of the QEMU. A privileged guest user can pass invalid values for the rx/tx queue size or other NIC parameters and perform a denial of service attack.


Remediation

Install updates from vendor's website.

External links