SB2023111056 - Privilege escalation in FreeBSD Capsicum
Published: November 10, 2023
Security Bulletin ID
SB2023111056
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) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-5369)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the copy_file_range system call in Capsicum checks only for CAP_READ and CAP_WRITE capabilities on the input and output file descriptors. A local user can read and write data to an arbitrary location within the file corresponding to that file descriptor.
Remediation
Install update from vendor's website.