libvirt virtlockd-admin.socket and virtlogd-admin.socket systemd Privilege Escalation Vulnerability [CVE-2019-10132]

CVE Number – CVE-2019-10132

A vulnerability in libvirt could allow an authenticated, remote attacker to escalate privileges on a targeted system.The vulnerability exists because the virtlockd-admin.socket and virtlogd-admin.socket unit files do not set the SocketMode configuration parameter in the affected software. An attacker with user access could exploit this vulnerability by connecting to the targeted system using virtlockd-admin-sock or virtlogd-admin-sock. A successful exploit could allow the attacker to bypass security restrictions and conduct further attacks.libvirt has confirmed the vulnerability and released software updates.

Analysis

• To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.

Safeguards

• Administrators are advised to apply the appropriate updates.Administrators are advised to allow only trusted users to have network access.Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.Administrators can help protect affected systems from external attacks by using a solid firewall strategy.Administrators are advised to monitor affected systems.

Vendor Announcements

• libvirt has released a security notice at the following link: Libvirt Security Notice: LSN-2019-0003

Fixed Software

• libvirt has released software updates at the following link: libvirt releases