Permissions, Privileges, and Access Controls in Snapd - CVE-2023-1523
Published: May 30, 2023
Vulnerability identifier: #VU76639
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-1523
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to missing access restrictions to IOCTL and TIOCLINUX. A local user can execute arbitrary code with elevated privileges.
Affected software
Snapd
Ubuntu
snapd (Ubuntu package)
Ubuntu
snapd (Ubuntu package)
How to mitigate CVE-2023-1523
Install updates from vendor's website.
Snapd - update to 2.59.5
snapd (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 2.58+18.04.1, 2.58+20.04.1, 2.58+22.04.1, 2.58+22.10.1, 2.59.1+23.04ubuntu1.1
snapd (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 2.58+18.04.1, 2.58+20.04.1, 2.58+22.04.1, 2.58+22.10.1, 2.59.1+23.04ubuntu1.1