SB2019052801 - OpenSUSE Linux update for systemd
Published: May 28, 2019
Security Bulletin ID
SB2019052801
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Symlink attack (CVE-ID: CVE-2018-6954)
The vulnerability allows a local attacker to launch symlink attack on the target system.The weakness exists in the systemd-tmpfiles feature due to improper handling of symlinks in nonterminal path components. A local attacker can gain unauthorized access to arbitrary files.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-3842)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to pam_systemd creates a user session using environmental parameters. A local user can spoof an active session and gain additional PolicyKit privileges.
3) Input validation error (CVE-ID: CVE-2019-6454)
The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.The weakness exists due to incorrect handling of certain D-Bus messages. A local attacker can supply specially crafted D-Bus messages to crash the init process, resulting in a system denial-of-service (kernel panic).
Remediation
Install update from vendor's website.