PT-2019-5841 · Libvirt+3 · Libvirt+3

Published 2019-04-01 · Updated 2024-06-15 · CVE-2019-3886

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions libvirt versions 4.8.0 and above

Description The issue is related to an incorrect permissions check in the libvirt library, which manages virtualization. This could allow a remote attacker to gain access to confidential information or cause a denial of service. The problem arises because the readonly permission is allowed to invoke APIs that depend on the guest agent, potentially leading to the disclosure of unintended information or a denial of service by causing libvirt to block.

Recommendations For libvirt versions 4.8.0 and above, consider restricting access to the guest agent APIs to prevent potential exploitation until a patch is available. As a temporary workaround, review and adjust the permissions settings to ensure that the readonly permission does not invoke sensitive APIs.

Exploit

Fix

DoS

Information Disclosure

Missing Authorization

Weakness Enumeration

CWE-200

CWE-862

Related Identifiers

ALT-PU-2019-1991

ALT-PU-2019-1995

BDU:2021-03397

CVE-2019-3886

MGASA-2019-0390

OPENSUSE-SU-2019_1294-1

OPENSUSE-SU-2024:11008-1

SUSE-SU-2019:0948-1

SUSE-SU-2019:1042-1

SUSE-SU-2019:1285-1

SUSE-SU-2019:14097-1

SUSE-SU-2019:1438-1

SUSE-SU-2019_1285-1

SUSE-SU-2019_14097-1

SUSE-SU-2019_1438-1

Affected Products

Alt Linux

Suse

Ubuntu

Libvirt

References · 107

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3886 · Exploit
• https://bdu.fstec.ru/vul/2019-01742 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3886 · Security Note
• https://osv.dev/vulnerability/MGASA-2019-0390 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:14097-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12130 · Security Note
• https://bdu.fstec.ru/vul/2019-01957 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-3886 · Security Note
• https://bdu.fstec.ru/vul/2019-01960 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2019:1438-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0390.html · Security Note
• https://errata.altlinux.org/ALT-PU-2019-1991 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11008-1 · Vendor Advisory
• https://access.redhat.com/errata/RHBA-2019:3723 · Vendor Advisory