#VU58358 Use-after-free in libvirt - CVE-2021-3975

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU58358

#VU58358 Use-after-free in libvirt - CVE-2021-3975

Published: November 24, 2021


Vulnerability identifier: #VU58358
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3975
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
libvirt
Software vendor:
libvirt.org

Description

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

The vulnerability exists due to a use-after-free error in the qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF. An unprivileged client with a read-only connection can trigger the use-after-free error by calling the virConnectGetAllDomainStats API and crash the application.



Remediation

Install updates from vendor's website.

External links