CVE-2018-6954

Upstream information

CVE-2018-6954 at MITRE

Description

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having important severity.

CVSS v2 Scores
	National Vulnerability Database
Base Score	7.2
Vector	AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector	Local
Access Complexity	Low
Authentication	None
Confidentiality Impact	Complete
Integrity Impact	Complete
Availability Impact	Complete

CVSS v3 Scores
	National Vulnerability Database	SUSE
Base Score	7.8	7.1
Vector	AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Access Vector	Local	Local
Access Complexity	Low	Low
Privileges Required	Low	Low
User Interaction	None	None
Scope	Unchanged	Unchanged
Confidentiality Impact	High	High
Integrity Impact	High	High
Availability Impact	High	None
CVSSv3 Version	3.0	3.0

SUSE Bugzilla entry: 1080919 [IN_PROGRESS]

SUSE Security Advisories:

SUSE-CU-2019:697-1, published Tue Jan 14 00:06:48 MST 2020
SUSE-CU-2019:702-1, published Wed Jan 15 11:24:24 MST 2020
SUSE-CU-2019:735-1, published Thu Jan 16 10:01:49 MST 2020
SUSE-SU-2019:0137-1, published Mon Jan 21 13:09:05 MST 2019
SUSE-SU-2019:1265-1, published Thu May 16 07:37:43 MDT 2019
openSUSE-SU-2019:0098-1, published Tue, 29 Jan 2019 15:15:29 +0100 (CET)
openSUSE-SU-2019:1450-1, published Tue, 28 May 2019 00:10:24 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
Openstack Cloud Magnum Orchestration 7	`libsystemd0 >= 228-150.66.4` `libudev1 >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2019-1265
SUSE CaaS Platform 3.0	`libsystemd0 >= 228-150.66.4` `libudev1 >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-CAASP-3.0-2019-1265
SUSE CaaS Platform ALL	`libsystemd0 >= 228-150.66.4` `libudev1 >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-CAASP-ALL-2019-1265
SUSE Enterprise Storage 4	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-Storage-4-2019-1265
SUSE Linux Enterprise Build System Kit 12 SP3	`libudev-mini-devel >= 228-150.66.2` `libudev-mini1 >= 228-150.66.2` `systemd-mini >= 228-150.66.2` `systemd-mini-devel >= 228-150.66.2` `udev-mini >= 228-150.66.2`	Patchnames: SUSE-SLE-BSK-12-SP3-2019-1265
SUSE Linux Enterprise Build System Kit 12 SP4	`libudev-mini-devel >= 228-150.66.2` `libudev-mini1 >= 228-150.66.2` `systemd-mini >= 228-150.66.2` `systemd-mini-devel >= 228-150.66.2` `udev-mini >= 228-150.66.2`	Patchnames: SUSE-SLE-BSK-12-SP4-2019-1265
SUSE Linux Enterprise Desktop 12 SP3	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-DESKTOP-12-SP3-2019-1265
SUSE Linux Enterprise Desktop 12 SP4	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-DESKTOP-12-SP4-2019-1265
SUSE Linux Enterprise High Performance Computing 12 SP5	`libsystemd0 >= 228-155.21` `libsystemd0-32bit >= 228-155.21` `libudev1 >= 228-155.21` `libudev1-32bit >= 228-155.21` `systemd >= 228-155.21` `systemd-32bit >= 228-155.21` `systemd-bash-completion >= 228-155.21` `systemd-sysvinit >= 228-155.21` `udev >= 228-155.21`	Patchnames: SUSE Linux Enterprise High Performance Computing 12 SP5 GA libsystemd0
SUSE Linux Enterprise Module for Basesystem 15	`libsystemd0 >= 234-24.20.1` `libsystemd0-32bit >= 234-24.20.1` `libudev-devel >= 234-24.20.1` `libudev1 >= 234-24.20.1` `libudev1-32bit >= 234-24.20.1` `systemd >= 234-24.20.1` `systemd-32bit >= 234-24.20.1` `systemd-bash-completion >= 234-24.20.1` `systemd-container >= 234-24.20.1` `systemd-coredump >= 234-24.20.1` `systemd-devel >= 234-24.20.1` `systemd-sysvinit >= 234-24.20.1` `udev >= 234-24.20.1`	Patchnames: SUSE-SLE-Module-Basesystem-15-2019-137
SUSE Linux Enterprise Module for Basesystem 15 SP1	`libsystemd0 >= 234-24.25.1` `libsystemd0-32bit >= 234-24.25.1` `libudev-devel >= 234-24.25.1` `libudev1 >= 234-24.25.1` `libudev1-32bit >= 234-24.25.1` `systemd >= 234-24.25.1` `systemd-32bit >= 234-24.25.1` `systemd-bash-completion >= 234-24.25.1` `systemd-container >= 234-24.25.1` `systemd-coredump >= 234-24.25.1` `systemd-devel >= 234-24.25.1` `systemd-sysvinit >= 234-24.25.1` `udev >= 234-24.25.1`	Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP1 GA libsystemd0
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15	`libsystemd0-mini >= 234-24.20.1` `libudev-mini-devel >= 234-24.20.1` `libudev-mini1 >= 234-24.20.1` `nss-myhostname >= 234-24.20.1` `nss-mymachines >= 234-24.20.1` `nss-systemd >= 234-24.20.1` `systemd >= 234-24.20.1` `systemd-logger >= 234-24.20.1` `systemd-mini >= 234-24.20.1` `systemd-mini-bash-completion >= 234-24.20.1` `systemd-mini-container-mini >= 234-24.20.1` `systemd-mini-coredump-mini >= 234-24.20.1` `systemd-mini-devel >= 234-24.20.1` `systemd-mini-sysvinit >= 234-24.20.1` `udev-mini >= 234-24.20.1`	Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-2019-137
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-POS-12-SP2-CLIENT-2019-1265
SUSE Linux Enterprise Server 12 SP2-BCL	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2019-1265
SUSE Linux Enterprise Server 12 SP2-ESPOS	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2019-1265
SUSE Linux Enterprise Server 12 SP2-LTSS	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-2019-1265
SUSE Linux Enterprise Server 12 SP3	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP3-2019-1265
SUSE Linux Enterprise Server 12 SP4	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP4-2019-1265
SUSE Linux Enterprise Server 12 SP5	`libsystemd0 >= 228-155.21` `libsystemd0-32bit >= 228-155.21` `libudev1 >= 228-155.21` `libudev1-32bit >= 228-155.21` `systemd >= 228-155.21` `systemd-32bit >= 228-155.21` `systemd-bash-completion >= 228-155.21` `systemd-sysvinit >= 228-155.21` `udev >= 228-155.21`	Patchnames: SUSE Linux Enterprise Server 12 SP5 GA libsystemd0
SUSE Linux Enterprise Server for SAP Applications 12 SP2	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SAP-12-SP2-2019-1265
SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2019-1265
SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2019-1265
SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP2-2019-1265
SUSE Linux Enterprise Server for SAP Applications 12 SP3	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP3-2019-1265
SUSE Linux Enterprise Server for SAP Applications 12 SP4	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-SLE-SERVER-12-SP4-2019-1265
SUSE Linux Enterprise Software Development Kit 12 SP3	`libudev-devel >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-devel >= 228-150.66.4`	Patchnames: SUSE-SLE-SDK-12-SP3-2019-1265
SUSE Linux Enterprise Software Development Kit 12 SP4	`libudev-devel >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-devel >= 228-150.66.4`	Patchnames: SUSE-SLE-SDK-12-SP4-2019-1265
SUSE Linux Enterprise Software Development Kit 12 SP5	`libudev-devel >= 228-155.21` `systemd-devel >= 228-155.21`	Patchnames: SUSE Linux Enterprise Software Development Kit 12 SP5 GA libudev-devel
SUSE OpenStack Cloud 7	`libsystemd0 >= 228-150.66.4` `libsystemd0-32bit >= 228-150.66.4` `libudev-devel >= 228-150.66.4` `libudev1 >= 228-150.66.4` `libudev1-32bit >= 228-150.66.4` `systemd >= 228-150.66.4` `systemd-32bit >= 228-150.66.4` `systemd-bash-completion >= 228-150.66.4` `systemd-sysvinit >= 228-150.66.4` `udev >= 228-150.66.4`	Patchnames: SUSE-OpenStack-Cloud-7-2019-1265
openSUSE Leap 15.0	`libsystemd0 >= 234-lp150.20.12.1` `libsystemd0-32bit >= 234-lp150.20.12.1` `libsystemd0-32bit-debuginfo >= 234-lp150.20.12.1` `libsystemd0-debuginfo >= 234-lp150.20.12.1` `libsystemd0-mini >= 234-lp150.20.12.1` `libsystemd0-mini-debuginfo >= 234-lp150.20.12.1` `libudev-devel >= 234-lp150.20.12.1` `libudev-devel-32bit >= 234-lp150.20.12.1` `libudev-mini-devel >= 234-lp150.20.12.1` `libudev-mini1 >= 234-lp150.20.12.1` `libudev-mini1-debuginfo >= 234-lp150.20.12.1` `libudev1 >= 234-lp150.20.12.1` `libudev1-32bit >= 234-lp150.20.12.1` `libudev1-32bit-debuginfo >= 234-lp150.20.12.1` `libudev1-debuginfo >= 234-lp150.20.12.1` `nss-myhostname >= 234-lp150.20.12.1` `nss-myhostname-32bit >= 234-lp150.20.12.1` `nss-myhostname-32bit-debuginfo >= 234-lp150.20.12.1` `nss-myhostname-debuginfo >= 234-lp150.20.12.1` `nss-mymachines >= 234-lp150.20.12.1` `nss-mymachines-32bit >= 234-lp150.20.12.1` `nss-mymachines-32bit-debuginfo >= 234-lp150.20.12.1` `nss-mymachines-debuginfo >= 234-lp150.20.12.1` `nss-systemd >= 234-lp150.20.12.1` `nss-systemd-debuginfo >= 234-lp150.20.12.1` `systemd >= 234-lp150.20.12.1` `systemd-32bit >= 234-lp150.20.12.1` `systemd-32bit-debuginfo >= 234-lp150.20.12.1` `systemd-bash-completion >= 234-lp150.20.12.1` `systemd-container >= 234-lp150.20.12.1` `systemd-container-debuginfo >= 234-lp150.20.12.1` `systemd-coredump >= 234-lp150.20.12.1` `systemd-coredump-debuginfo >= 234-lp150.20.12.1` `systemd-debuginfo >= 234-lp150.20.12.1` `systemd-debugsource >= 234-lp150.20.12.1` `systemd-devel >= 234-lp150.20.12.1` `systemd-logger >= 234-lp150.20.12.1` `systemd-mini >= 234-lp150.20.12.1` `systemd-mini-bash-completion >= 234-lp150.20.12.1` `systemd-mini-container-mini >= 234-lp150.20.12.1` `systemd-mini-container-mini-debuginfo >= 234-lp150.20.12.1` `systemd-mini-coredump-mini >= 234-lp150.20.12.1` `systemd-mini-coredump-mini-debuginfo >= 234-lp150.20.12.1` `systemd-mini-debuginfo >= 234-lp150.20.12.1` `systemd-mini-debugsource >= 234-lp150.20.12.1` `systemd-mini-devel >= 234-lp150.20.12.1` `systemd-mini-sysvinit >= 234-lp150.20.12.1` `systemd-sysvinit >= 234-lp150.20.12.1` `udev >= 234-lp150.20.12.1` `udev-debuginfo >= 234-lp150.20.12.1` `udev-mini >= 234-lp150.20.12.1` `udev-mini-debuginfo >= 234-lp150.20.12.1`	Patchnames: openSUSE-2019-98
openSUSE Leap 42.3	`libsystemd0 >= 228-71.1` `libsystemd0-32bit >= 228-71.1` `libsystemd0-debuginfo >= 228-71.1` `libsystemd0-debuginfo-32bit >= 228-71.1` `libsystemd0-mini >= 228-71.1` `libsystemd0-mini-debuginfo >= 228-71.1` `libudev-devel >= 228-71.1` `libudev-mini-devel >= 228-71.1` `libudev-mini1 >= 228-71.1` `libudev-mini1-debuginfo >= 228-71.1` `libudev1 >= 228-71.1` `libudev1-32bit >= 228-71.1` `libudev1-debuginfo >= 228-71.1` `libudev1-debuginfo-32bit >= 228-71.1` `nss-myhostname >= 228-71.1` `nss-myhostname-32bit >= 228-71.1` `nss-myhostname-debuginfo >= 228-71.1` `nss-myhostname-debuginfo-32bit >= 228-71.1` `nss-mymachines >= 228-71.1` `nss-mymachines-debuginfo >= 228-71.1` `systemd >= 228-71.1` `systemd-32bit >= 228-71.1` `systemd-bash-completion >= 228-71.1` `systemd-debuginfo >= 228-71.1` `systemd-debuginfo-32bit >= 228-71.1` `systemd-debugsource >= 228-71.1` `systemd-devel >= 228-71.1` `systemd-logger >= 228-71.1` `systemd-mini >= 228-71.1` `systemd-mini-bash-completion >= 228-71.1` `systemd-mini-debuginfo >= 228-71.1` `systemd-mini-debugsource >= 228-71.1` `systemd-mini-devel >= 228-71.1` `systemd-mini-sysvinit >= 228-71.1` `systemd-sysvinit >= 228-71.1` `udev >= 228-71.1` `udev-debuginfo >= 228-71.1` `udev-mini >= 228-71.1` `udev-mini-debuginfo >= 228-71.1`	Patchnames: openSUSE-2019-1450

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s)	Source package	State
CaaS Platform 2.0	systemd	Released
CaaS Platform 3.0	systemd	Released
OpenStack Cloud Magnum Orchestration 7.0	systemd	Released
SUSE Linux Enterprise Desktop 12 SP2	systemd	Affected
SUSE Linux Enterprise Desktop 12 SP3	systemd	Released
SUSE Linux Enterprise Desktop 12 SP4	systemd	Released
SUSE Linux Enterprise High Performance Computing 12	systemd	Released
SUSE Linux Enterprise Module for Basesystem 15 GA	systemd	Released
SUSE Linux Enterprise SDK 12 SP2	systemd	Affected
SUSE Linux Enterprise SDK 12 SP3	systemd	Released
SUSE Linux Enterprise SDK 12 SP4	systemd	Released
SUSE Linux Enterprise Server 12 GA LTSS	systemd	Affected
SUSE Linux Enterprise Server 12 SP1 LTSS	systemd	Affected
SUSE Linux Enterprise Server 12 SP2	systemd	Affected
SUSE Linux Enterprise Server 12 SP2 LTSS	systemd	Released
SUSE Linux Enterprise Server 12 SP3	systemd	Released
SUSE Linux Enterprise Server 12 SP4	systemd	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP2	systemd	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3	systemd	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4	systemd	Released