SB2023120545 - Improper access control in lxd
Published: December 5, 2023 Updated: April 9, 2026
Security Bulletin ID
SB2023120545
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: N/A)
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in disk device configuration validation when creating a disk device with shift=true in a restricted project without restricted.devices.disk.paths set. A remote user can create a disk device with shift=true and a setuid root executable to escalate privileges.
The issue occurs in projects configured with restricted=true and restricted.devices.disk=allow.
Remediation
Install update from vendor's website.