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RedHat Enterprise Linux 8: RHSA-2020-0575 Important: systemd Use-After-Free

red hat
Calendar Grey February 24, 2020
Dist Redhat Esm H88
Critical update for Red Hat Enterprise Linux 8 includes important security fixes for systemd, addressing a use-after-free issue.
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: use-after-free when asynchronous polkit queries are performed (CVE-2020-1712)
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.
Bug Fix(es):
* systemd: systemctl reload command breaks ordering dependencies between units (BZ#1781712)

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux important product update use-after-free systemd

References

https://access.redhat.com/security/cve/CVE-2020-1712 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: systemd-239-18.el8_1.4.src.rpm
aarch64: systemd-239-18.el8_1.4.aarch64.rpm systemd-container-239-18.el8_1.4.aarch64.rpm systemd-container-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-debugsource-239-18.el8_1.4.aarch64.rpm systemd-devel-239-18.el8_1.4.aarch64.rpm systemd-journal-remote-239-18.el8_1.4.aarch64.rpm systemd-journal-remote-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-libs-239-18.el8_1.4.aarch64.rpm systemd-libs-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-pam-239-18.el8_1.4.aarch64.rpm systemd-pam-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-tests-239-18.el8_1.4.aarch64.rpm systemd-tests-debuginfo-239-18.el8_1.4.aarch64.rpm systemd-udev-239-18.el8_1.4.aarch64.rpm systemd-udev-debuginfo-239-18.el8_1.4.aarch64.rpm
ppc64le: systemd-239-18.el8_1.4.ppc64le.rpm systemd-container-239-18.el8_1.4.ppc64le.rpm systemd-container-debuginfo-239-18.el8_1.4.ppc64le.rpm systemd-debuginfo-239-18.el8_1.4.ppc64le.rpm systemd-debugsource-239-18.el8_1.4.ppc64le.rpm systemd-devel-239-18.el8_1.4.ppc64le.rpm systemd-journal-remote-239-18.el8_1.4.ppc64le.rpm systemd-journal-remote-debuginfo-239-18.el8_1.4.ppc64le.rpm systemd-libs-239-18.el8_1.4.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0575-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0575
Issue date: 2020-02-24

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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux important product update use-after-free systemd

Relevant Releases Architectures

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

Bugs Fixed

1794578 - CVE-2020-1712 systemd: use-after-free when asynchronous polkit queries are performed

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