Vulnerabilities
Misconfiguration
Runtime Security
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CVE Vulnerabilities

CVE-2019-10132

Incorrect Permission Assignment for Critical Resource

Published: May 22, 2019 | Modified: Feb 12, 2023
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
8.8 IMPORTANT
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-10132
CWEhttps://cwe.mitre.org/data/definitions/732.html

A vulnerability was found in libvirt >= 4.1.0 in the virtlockd-admin.socket and virtlogd-admin.socket systemd units. A missing SocketMode configuration parameter allows any user on the host to connect using virtlockd-admin-sock or virtlogd-admin-sock and perform administrative tasks against the virtlockd and virtlogd daemons.

Weakness

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Affected Software

Name Vendor Start Version End Version
Libvirt Redhat * 4.1.0 (including)
Red Hat Enterprise Linux 7 RedHat libvirt-0:4.5.0-10.el7_6.10 *
Red Hat Enterprise Linux 8 RedHat virt:rhel-8000020190516125745.55190bc5 *
Red Hat Enterprise Linux 8 Advanced Virtualization RedHat virt:8.0.0-8000020190530233731.55190bc5 *
Libvirt Ubuntu cosmic *
Libvirt Ubuntu devel *
Libvirt Ubuntu disco *

Potential Mitigations

  • Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.

References

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