SB2018021342 - Fedora 27 update for libvirt
Published: February 13, 2018 Updated: April 24, 2025
Security Bulletin ID
SB2018021342
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2018-5748)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to a flaw in qemu/qemu_monitor.c in libvirt. A remote attacker can supply a large QEMU reply, trigger resource exhaustion and cause the service to crash.
2) Security restrictions bypass (CVE-ID: CVE-2018-6764)
The vulnerability allows an adjacent attacker to bypass security restrictions on the target system.The weakness exists in the util/virlog.c source code file due to improper determination of hostnames during LXC container startup. An adjacent attacker can bypass security restrictions and execute arbitrary commands.
Remediation
Install update from vendor's website.