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RedHat: RHSA-2020-1794-01 Moderate: Systemd Security Update

red hat
Calendar Grey April 28, 2020
Dist Redhat Esm H88
Important systemd security patch released for Red Hat Enterprise Linux 8 tackling significant vulnerabilities and enhancements.
An update for systemd is now available for Red Hat Enterprise Linux 8

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate security issue bug fix red hat enterprise systemd service manager

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

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

Read the Full Advisory


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

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security issue bug fix red hat enterprise systemd service manager

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

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

Read the Full Advisory

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