SB2020080703 - Privilege escalation in FreeBSD
Published: August 7, 2020
Security Bulletin ID
SB2020080703
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) Race condition (CVE-ID: CVE-2020-7460)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the sendmsg system call in the compat32 subsystem on 64-bit platforms has a time-of-check to time-of-use issue. A local user can tun a specially crafted program from userspace and modify control message headers after they are validation.
Successful exploitation of the vulnerability may allow an attacker to escalate privileges on the system.
Remediation
Install update from vendor's website.