SB2022070445 - SUSE update for qemu

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Main Vulnerability Database SB2022070445

SB2022070445 - SUSE update for qemu

Published: July 4, 2022

Security Bulletin ID SB2022070445
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2021-4206)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to integer overflow in the cursor_alloc() function in the QXL display device emulation in QEMU. A privileged user can crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.


2) Race condition (CVE-ID: CVE-2021-4207)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition in the QXL display device emulation in QEMU. A privileged user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.


3) Use-after-free (CVE-ID: CVE-2022-26353)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the virtio-net device of QEMU. A privileged user can exploit this issue to crash QEMU or potentially execute arbitrary code with elevated privileges.


4) Improper Resource Shutdown or Release (CVE-ID: CVE-2022-26354)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists in the vhost-vsock device of QEMU. A local user can trigger the error and gain access to sensitive information.


Remediation

Install update from vendor's website.

References