SB2022111536 - Multiple vulnerabilities in QEMU

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Main Vulnerability Database SB2022111536

SB2022111536 - Multiple vulnerabilities in QEMU

Published: November 15, 2022

Security Bulletin ID SB2022111536
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2021-3750)

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the USB EHCI controller emulation of QEMU. A remote guest can trigger a use-after-free error and execute arbitrary code on the host OS.



2) Out-of-bounds write (CVE-ID: CVE-2021-3611)

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

The vulnerability exists due to a boundary error in the Intel HD Audio device (intel-hda) of QEMU. A remote user of the guest OS trigger an out-of-bounds write and crash the QEMU process on the host.


Remediation

Install update from vendor's website.

References