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Red Hat Security Advisory
Synopsis: Moderate: systemd security, bug fix, and enhancement update
Advisory ID: RHSA-2020:1794-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1794
Issue date: 2020-04-28
CVE Names: CVE-2019-3843 CVE-2019-3844
=====================================================================
1. Summary:
An update for systemd is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux BaseOS (v. 8) – aarch64, ppc64le, s390x, x86_64
3. Description:
The systemd packages contain systemd, a system and service manager for
Linux, compatible with the SysV and LSB init scripts. It provides
aggressive parallelism capabilities, uses socket and D-Bus activation for
starting services, offers on-demand starting of daemons, and keeps track of
processes using Linux cgroups. In addition, it supports snapshotting and
restoring of the system state, maintains mount and automount points, and
implements an elaborate transactional dependency-based service control
logic. It can also work as a drop-in replacement for sysvinit.
Security Fix(es):
* systemd: services with DynamicUser can create SUID/SGID binaries
(CVE-2019-3843)
* systemd: services with DynamicUser can get new privileges and create SGID
binaries (CVE-2019-3844)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.2 Release Notes linked from the References section.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1684607 – CVE-2019-3843 systemd: services with DynamicUser can create SUID/SGID binaries
1684610 – CVE-2019-3844 systemd: services with DynamicUser can get new privileges and create SGID binaries
1689346 – please add kptr_restrict=1 to /usr/lib/sysctl.conf/50-default.conf
1696602 – systemd-cryptsetup: Serialize access to memory hard enabled keyslots while unlocking many LUKS devices
1717603 – Systemd doesn’t allow to set User in service files to a username with a dot in it. Error: Invalid user/group name or numeric ID
1719577 – [RFE] Enhance journald to allow rate-limits to be applied per unit instead of just per server
1723722 – debug-generator: enable custom systemd.debug_shell tty
1724617 – RFE: add support for cgroups v2 cpuset controller
1734787 – Backport NUMA stuff
1735787 – Unable to repeatedly reload service that fails
1743235 – journalctl dumps core when stack limit is reduced to 256 KB
1748258 – systemd rpm has gaps in annobin coverage
1749212 – Backport 0a2eef1ee1fef74be9d12f7dc4d0006b645b579c
1752050 – Memory corruption in systemd-cryptsetup
1753369 – U2F enablement package not available in EPEL8 for RHEL8
1762679 – Rules in 40-redhat.rules file for SUBSYSTEM==memory are suboptimal and may lead to timing issues
1763155 – Password fallback when using systemd-cryptsetup-generator keydev option
1763161 – High load in systemd when cups.path and cups.service is enabled
1763619 – Assertion failure when system journal rotation fails
1770189 – sd-bus: bump message queue size
1776408 – Ambiguous error returned preventing user from understanding the root cause of the error
1777110 – provide systemd-rpm-macros to keep compatibility with Fedora/EPEL packages
1778384 – systemd doesn’t reset ownership of StateDirectory if directory already exists
1808940 – cpuset controller group not created for qemu vm
6. Package List:
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
systemd-239-29.el8.src.rpm
aarch64:
systemd-239-29.el8.aarch64.rpm
systemd-container-239-29.el8.aarch64.rpm
systemd-container-debuginfo-239-29.el8.aarch64.rpm
systemd-debuginfo-239-29.el8.aarch64.rpm
systemd-debugsource-239-29.el8.aarch64.rpm
systemd-devel-239-29.el8.aarch64.rpm
systemd-journal-remote-239-29.el8.aarch64.rpm
systemd-journal-remote-debuginfo-239-29.el8.aarch64.rpm
systemd-libs-239-29.el8.aarch64.rpm
systemd-libs-debuginfo-239-29.el8.aarch64.rpm
systemd-pam-239-29.el8.aarch64.rpm
systemd-pam-debuginfo-239-29.el8.aarch64.rpm
systemd-tests-239-29.el8.aarch64.rpm
systemd-tests-debuginfo-239-29.el8.aarch64.rpm
systemd-udev-239-29.el8.aarch64.rpm
systemd-udev-debuginfo-239-29.el8.aarch64.rpm
ppc64le:
systemd-239-29.el8.ppc64le.rpm
systemd-container-239-29.el8.ppc64le.rpm
systemd-container-debuginfo-239-29.el8.ppc64le.rpm
systemd-debuginfo-239-29.el8.ppc64le.rpm
systemd-debugsource-239-29.el8.ppc64le.rpm
systemd-devel-239-29.el8.ppc64le.rpm
systemd-journal-remote-239-29.el8.ppc64le.rpm
systemd-journal-remote-debuginfo-239-29.el8.ppc64le.rpm
systemd-libs-239-29.el8.ppc64le.rpm
systemd-libs-debuginfo-239-29.el8.ppc64le.rpm
systemd-pam-239-29.el8.ppc64le.rpm
systemd-pam-debuginfo-239-29.el8.ppc64le.rpm
systemd-tests-239-29.el8.ppc64le.rpm
systemd-tests-debuginfo-239-29.el8.ppc64le.rpm
systemd-udev-239-29.el8.ppc64le.rpm
systemd-udev-debuginfo-239-29.el8.ppc64le.rpm
s390x:
systemd-239-29.el8.s390x.rpm
systemd-container-239-29.el8.s390x.rpm
systemd-container-debuginfo-239-29.el8.s390x.rpm
systemd-debuginfo-239-29.el8.s390x.rpm
systemd-debugsource-239-29.el8.s390x.rpm
systemd-devel-239-29.el8.s390x.rpm
systemd-journal-remote-239-29.el8.s390x.rpm
systemd-journal-remote-debuginfo-239-29.el8.s390x.rpm
systemd-libs-239-29.el8.s390x.rpm
systemd-libs-debuginfo-239-29.el8.s390x.rpm
systemd-pam-239-29.el8.s390x.rpm
systemd-pam-debuginfo-239-29.el8.s390x.rpm
systemd-tests-239-29.el8.s390x.rpm
systemd-tests-debuginfo-239-29.el8.s390x.rpm
systemd-udev-239-29.el8.s390x.rpm
systemd-udev-debuginfo-239-29.el8.s390x.rpm
x86_64:
systemd-239-29.el8.i686.rpm
systemd-239-29.el8.x86_64.rpm
systemd-container-239-29.el8.i686.rpm
systemd-container-239-29.el8.x86_64.rpm
systemd-container-debuginfo-239-29.el8.i686.rpm
systemd-container-debuginfo-239-29.el8.x86_64.rpm
systemd-debuginfo-239-29.el8.i686.rpm
systemd-debuginfo-239-29.el8.x86_64.rpm
systemd-debugsource-239-29.el8.i686.rpm
systemd-debugsource-239-29.el8.x86_64.rpm
systemd-devel-239-29.el8.i686.rpm
systemd-devel-239-29.el8.x86_64.rpm
systemd-journal-remote-239-29.el8.x86_64.rpm
systemd-journal-remote-debuginfo-239-29.el8.i686.rpm
systemd-journal-remote-debuginfo-239-29.el8.x86_64.rpm
systemd-libs-239-29.el8.i686.rpm
systemd-libs-239-29.el8.x86_64.rpm
systemd-libs-debuginfo-239-29.el8.i686.rpm
systemd-libs-debuginfo-239-29.el8.x86_64.rpm
systemd-pam-239-29.el8.x86_64.rpm
systemd-pam-debuginfo-239-29.el8.i686.rpm
systemd-pam-debuginfo-239-29.el8.x86_64.rpm
systemd-tests-239-29.el8.x86_64.rpm
systemd-tests-debuginfo-239-29.el8.i686.rpm
systemd-tests-debuginfo-239-29.el8.x86_64.rpm
systemd-udev-239-29.el8.x86_64.rpm
systemd-udev-debuginfo-239-29.el8.i686.rpm
systemd-udev-debuginfo-239-29.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2019-3843
https://access.redhat.com/security/cve/CVE-2019-3844
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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