SUSE SLED12 / SLES12 Security Update : systemd (SUSE-SU-2018:3767-2)

critical Nessus Plugin ID 119575
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 systemd fixes the following issues :

Security issues fixed :

CVE-2018-15688: A buffer overflow vulnerability in the dhcp6 client of systemd allowed a malicious dhcp6 server to overwrite heap memory in systemd-networkd. (bsc#1113632)

CVE-2018-15686: A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation.
(bsc#1113665)

Non-security issues fixed: dhcp6: split assert_return() to be more debuggable when hit

core: skip unit deserialization and move to the next one when unit_deserialize() fails

core: properly handle deserialization of unknown unit types (#6476)

core: don't create Requires for workdir if 'missing ok' (bsc#1113083)

logind: use manager_get_user_by_pid() where appropriate

logind: rework manager_get_{user|session}_by_pid() a bit

login: fix [email protected] case, so we don't allow nested sessions (#8051) (bsc#1112024)

core: be more defensive if we can't determine per-connection socket peer (#7329)

socket-util: introduce port argument in sockaddr_port()

service: fixup ExecStop for socket-activated shutdown (#4120)

service: Continue shutdown on socket activated unit on termination (#4108) (bsc#1106923)

cryptsetup: build fixes for 'add support for sector-size= option'

udev-rules: IMPORT cmdline does not recognize keys with similar names (bsc#1111278)

core: keep the kernel coredump defaults when systemd-coredump is disabled

core: shorten main() a bit, split out coredump initialization

core: set RLIMIT_CORE to unlimited by default (bsc#1108835)

core/mount: fstype may be NULL

journald: don't ship systemd-journald-audit.socket (bsc#1109252)

core: make 'tmpfs' dependencies on swapfs a 'default' dep, not an 'implicit' (bsc#1110445)

mount: make sure we unmount tmpfs mounts before we deactivate swaps (#7076)

tmp.mount.hm4: After swap.target (#3087)

Ship systemd-sysv-install helper via the main package This script was part of systemd-sysvinit sub-package but it was wrong since systemd-sysv-install is a script used to redirect enable/disable operations to chkconfig when the unit targets are sysv init scripts.
Therefore it's never been a SySV init tool.

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 Software Development Kit 12-SP4:zypper in -t patch SUSE-SLE-SDK-12-SP4-2018-2659=1

SUSE Linux Enterprise Server 12-SP4:zypper in -t patch SUSE-SLE-SERVER-12-SP4-2018-2659=1

SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2018-2659=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1106923

https://bugzilla.suse.com/show_bug.cgi?id=1108835

https://bugzilla.suse.com/show_bug.cgi?id=1109252

https://bugzilla.suse.com/show_bug.cgi?id=1110445

https://bugzilla.suse.com/show_bug.cgi?id=1111278

https://bugzilla.suse.com/show_bug.cgi?id=1112024

https://bugzilla.suse.com/show_bug.cgi?id=1113083

https://bugzilla.suse.com/show_bug.cgi?id=1113632

https://bugzilla.suse.com/show_bug.cgi?id=1113665

https://www.suse.com/security/cve/CVE-2018-15686/

https://www.suse.com/security/cve/CVE-2018-15688/

http://www.nessus.org/u?bf2aea0b

Plugin Details

Severity: Critical

ID: 119575

File Name: suse_SU-2018-3767-2.nasl

Version: 1.7

Type: local

Agent: unix

Published: 12/11/2018

Updated: 7/29/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libsystemd0, p-cpe:/a:novell:suse_linux:libsystemd0-32bit, p-cpe:/a:novell:suse_linux:libsystemd0-debuginfo, p-cpe:/a:novell:suse_linux:libsystemd0-debuginfo-32bit, p-cpe:/a:novell:suse_linux:libudev1, p-cpe:/a:novell:suse_linux:libudev1-32bit, p-cpe:/a:novell:suse_linux:libudev1-debuginfo, p-cpe:/a:novell:suse_linux:libudev1-debuginfo-32bit, p-cpe:/a:novell:suse_linux:systemd, p-cpe:/a:novell:suse_linux:systemd-32bit, p-cpe:/a:novell:suse_linux:systemd-debuginfo, p-cpe:/a:novell:suse_linux:systemd-debuginfo-32bit, p-cpe:/a:novell:suse_linux:systemd-debugsource, p-cpe:/a:novell:suse_linux:systemd-sysvinit, p-cpe:/a:novell:suse_linux:udev, p-cpe:/a:novell:suse_linux:udev-debuginfo, cpe:/o:novell:suse_linux:12

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/10/2018

Vulnerability Publication Date: 10/26/2018

Reference Information

CVE: CVE-2018-15686, CVE-2018-15688