SB2023110143 - Privilege escalation in Linux kernel netfilter
Published: November 1, 2023 Updated: June 16, 2024
Security Bulletin ID
SB2023110143
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) Out-of-bounds read (CVE-ID: CVE-2023-39189)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary condition within the nfnl_osf_add_callback() function in Linux kernel Netfilter. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.