SB2024012618 - Privilege escalation in QEMU
Published: January 26, 2024
Security Bulletin ID
SB2024012618
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper synchronization (CVE-ID: CVE-2023-5088)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper synchronization, which causes guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead. An L2 guest with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor can read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
Remediation
Install update from vendor's website.