SB2019090402 - Multiple vulnerabilities in systemd
Published: September 4, 2019 Updated: January 29, 2020
Security Bulletin ID
SB2019090402
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Incorrect default permissions (CVE-ID: CVE-2019-15718)
The vulnerability allows a local user to change DNS settings.
The vulnerability exists due to the systemd-resolved D-Bus interface does not enforce appropriate access controls. A local unprivileged user can modify DNS resolver settings.
2) Memory leak (CVE-ID: CVE-2019-20386)
The vulnerability allows a local user to perform DoS attack on the target system.
The vulnerability exists due memory leak in button_open() function in login/logind-button.c in systemd. A remote attacker can execute the udevadm trigger command and perform denial of service attack.
Remediation
Install update from vendor's website.