SB2020082303 - Link following in chrony (Alpine package)
Published: August 23, 2020
Security Bulletin ID
SB2020082303
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Link following (CVE-ID: CVE-2020-14367)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to a symlink following issue when creating the PID file under the "/var/run/chrony" folder. A remote authenticated attacker can create a symlink with the default PID file name pointing to any destination file in the system, resulting in data loss and a denial of service (DoS).
Remediation
Install update from vendor's website.