SB2020070903 - Privilege escalation in FreeBSD 11.4
Published: July 9, 2020
Security Bulletin ID
SB2020070903
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) Buffer overflow (CVE-ID: CVE-2020-7458)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing long values passed via the user-controlled PATH environment variable in posix_spawnp(3). A local user can construct a specially crafted PATH environment variable and execute arbitrary code on the system with elevated privileges.
Remediation
Install update from vendor's website.