SUSE SLED15 / SLES15 Security Update : libvirt (SUSE-SU-2019:0936-1)

medium Nessus Plugin ID 124055
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for libvirt provides the following fixes :

Security issue fixed :

CVE-2019-3840: Fixed a NULL pointer dereference vulnerability in virJSONValueObjectHasKey function which could have resulted in a remote denial of service via the guest agent (bsc#1127458).

Other issues addressed: apparmor: reintroduce upstream lxc mount rules (bsc#1130129).

hook: encode incoming XML to UTF-8 before passing to lxml etree from string method (bsc#1123642).

supportconfig: collect rotated logs in /var/log/libvirt/* (bsc#1124667).

libxl: support Xen's max_grant_frames setting with maxGrantFrames attribute on the xenbus controller (bsc#1126325).

conf: added new 'xenbus' controller type

util: skip RDMA detection for non-PCI network devices (bsc#1112182).

qemu: don't use CAP_DAC_OVERRIDE capability if non-root (bsc#1125665).

qemu: fix issues related to restricted permissions on /dev/sev(bsc#1102604).

apparmor: add support for named profiles (bsc#1118952).

libxl: save current memory value after successful balloon (bsc#1120813).

apparmor: Fix ptrace rules. (bsc#1117058)

libxl: Add support for soft reset. (bsc#1081516)

libxl: Fix VM migration on busy hosts. (bsc#1108086)

qemu: Add support for SEV guests. (fate#325817)

util: Don't check for parallel iteration in hash-related functions.
(bsc#1106420)

spec: Don't restart libvirt-guests when updating libvirt-client.
(bsc#1104662)

Fix virNodeGetSEVInfo API crashing libvirtd on AMD SEV enabled hosts.
(bsc#1108395)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Server Applications 15:zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-936=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-936=1

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-936=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1081516

https://bugzilla.suse.com/show_bug.cgi?id=1102604

https://bugzilla.suse.com/show_bug.cgi?id=1104662

https://bugzilla.suse.com/show_bug.cgi?id=1106420

https://bugzilla.suse.com/show_bug.cgi?id=1108086

https://bugzilla.suse.com/show_bug.cgi?id=1108395

https://bugzilla.suse.com/show_bug.cgi?id=1112182

https://bugzilla.suse.com/show_bug.cgi?id=1117058

https://bugzilla.suse.com/show_bug.cgi?id=1118952

https://bugzilla.suse.com/show_bug.cgi?id=1120813

https://bugzilla.suse.com/show_bug.cgi?id=1123642

https://bugzilla.suse.com/show_bug.cgi?id=1124667

https://bugzilla.suse.com/show_bug.cgi?id=1125665

https://bugzilla.suse.com/show_bug.cgi?id=1126325

https://bugzilla.suse.com/show_bug.cgi?id=1127458

https://bugzilla.suse.com/show_bug.cgi?id=1130129

https://www.suse.com/security/cve/CVE-2019-3840/

http://www.nessus.org/u?0eff6fac

Plugin Details

Severity: Medium

ID: 124055

File Name: suse_SU-2019-0936-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/15/2019

Updated: 1/13/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

Vector: AV:N/AC:M/Au:S/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libvirt, p-cpe:/a:novell:suse_linux:libvirt-admin, p-cpe:/a:novell:suse_linux:libvirt-admin-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-client, p-cpe:/a:novell:suse_linux:libvirt-client-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon, p-cpe:/a:novell:suse_linux:libvirt-daemon-config-network, p-cpe:/a:novell:suse_linux:libvirt-daemon-config-nwfilter, p-cpe:/a:novell:suse_linux:libvirt-daemon-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-interface, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-interface-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-libxl, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-libxl-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-lxc, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-lxc-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-network, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-network-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nodedev, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nodedev-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nwfilter-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-qemu, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-qemu-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-secret, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-secret-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-core, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-core-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-disk-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-iscsi-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-logical-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-mpath-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-rbd-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-scsi-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-daemon-hooks, p-cpe:/a:novell:suse_linux:libvirt-daemon-lxc, p-cpe:/a:novell:suse_linux:libvirt-daemon-qemu, p-cpe:/a:novell:suse_linux:libvirt-daemon-xen, p-cpe:/a:novell:suse_linux:libvirt-debugsource, p-cpe:/a:novell:suse_linux:libvirt-devel, p-cpe:/a:novell:suse_linux:libvirt-doc, p-cpe:/a:novell:suse_linux:libvirt-libs, p-cpe:/a:novell:suse_linux:libvirt-libs-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-lock-sanlock, p-cpe:/a:novell:suse_linux:libvirt-lock-sanlock-debuginfo, p-cpe:/a:novell:suse_linux:libvirt-nss, p-cpe:/a:novell:suse_linux:libvirt-nss-debuginfo, p-cpe:/a:novell:suse_linux:wireshark-plugin-libvirt, p-cpe:/a:novell:suse_linux:wireshark-plugin-libvirt-debuginfo, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/12/2019

Vulnerability Publication Date: 3/27/2019

Reference Information

CVE: CVE-2019-3840