PT-2020-6312 · Libvirt+8 · Libvirt+8

Pedro Sampaio · Published 2020-01-25 · Updated 2024-04-01 · CVE-2020-10703

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions libvirt versions 3.10.0 through 5.x

Description A NULL pointer dereference was found in the libvirt API for fetching a storage pool based on its target path. This flaw affects storage pools created without a target path, such as network-based pools like gluster and RBD. Unprivileged users with a read-only connection could abuse this flaw to crash the libvirt daemon, resulting in a potential denial of service.

Recommendations For libvirt versions 3.10.0 through 5.x, update to libvirt 6.0.0 to resolve the issue. As a temporary workaround, consider restricting access to the libvirt daemon to prevent unprivileged users from exploiting the flaw.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2020:4676

ALT-PU-2020-1097

ALT-PU-2021-1690

ALT-PU-2021-1965

BDU:2021-04130

CESA-2020_4000

CESA-2020_4676

CVE-2020-10703

DLA-3778-1

MGASA-2020-0250

RHSA-2020:4000

RHSA-2020:4676

RHSA-2020_4000

RHSA-2020_4676

RLSA-2020:4676

SUSE-SU-2020:1208-1

SUSE-SU-2020:1250-1

SUSE-SU-2020:1277-1

SUSE-SU-2020:1289-1

SUSE-SU-2020_1208-1

SUSE-SU-2020_1250-1

SUSE-SU-2020_1277-1

SUSE-SU-2020_1289-1

USN-4371-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Red Hat

Rocky Linux

Suse

Ubuntu

Libvirt

References · 92

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1790725 · Exploit
• https://ubuntu.com/security/CVE-2020-12430 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2020-4676.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-10703 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-4000.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:1250-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-10703 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10703 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-10703 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2020:4676 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:1289-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4371-1 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10703 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-10703 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04130 · Security Note