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RedHat: RHSA-2020-1264-01 Moderate: Systemd Out-Of-Bounds Read Threat

red hat
Calendar Grey April 1, 2020
Dist Redhat Esm H88
A security and stability enhancement patch for systemd on Red Hat Enterprise Linux classified as Moderate. It's recommended to implement this update immediately.
An update for systemd is now available for Red Hat Enterprise Linux 7.5 Extended Update Support

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: line splitting via fgets() allows for state injection during daemon-reexec (CVE-2018-15686)
* systemd: out-of-bounds read when parsing a crafted syslog message (CVE-2018-16866)
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):
* Restarting systemd-journald to load new configurations causes other daemons stop working (BZ#1798160)

Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux Moderate systemd service manager daemon re-exec

References

https://access.redhat.com/security/cve/CVE-2018-15686 https://access.redhat.com/security/cve/CVE-2018-16866 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5):
Source: systemd-219-57.el7_5.9.src.rpm
x86_64: libgudev1-219-57.el7_5.9.i686.rpm libgudev1-219-57.el7_5.9.x86_64.rpm systemd-219-57.el7_5.9.x86_64.rpm systemd-debuginfo-219-57.el7_5.9.i686.rpm systemd-debuginfo-219-57.el7_5.9.x86_64.rpm systemd-libs-219-57.el7_5.9.i686.rpm systemd-libs-219-57.el7_5.9.x86_64.rpm systemd-python-219-57.el7_5.9.x86_64.rpm systemd-sysv-219-57.el7_5.9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5):
x86_64: libgudev1-devel-219-57.el7_5.9.i686.rpm libgudev1-devel-219-57.el7_5.9.x86_64.rpm systemd-debuginfo-219-57.el7_5.9.i686.rpm systemd-debuginfo-219-57.el7_5.9.x86_64.rpm systemd-devel-219-57.el7_5.9.i686.rpm systemd-devel-219-57.el7_5.9.x86_64.rpm systemd-journal-gateway-219-57.el7_5.9.x86_64.rpm systemd-networkd-219-57.el7_5.9.x86_64.rpm systemd-resolved-219-57.el7_5.9.i686.rpm systemd-resolved-219-57.el7_5.9.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.5):
Source: systemd-219-57.el7_5.9.src.rpm
ppc64: libgudev1-219-57.el7_5.9.ppc.rpm libgudev1-219-57.el7_5.9.ppc64.rpm libgudev1-devel-219-57.el7_5.9.ppc.rpm libgudev1-devel-219-57.el7_5.9.ppc64.rpm systemd-219-57.el7_5.9.ppc64.rpm systemd-debuginfo-219-57.el7_5.9.ppc.rpm systemd-debuginfo-219-57.el7_5.9.ppc64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:1264-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1264
Issue date: 2020-04-01

Topic

An update for systemd is now available for Red Hat Enterprise Linux 7.5Extended Update Support.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 security issue Red Hat Enterprise Linux Moderate systemd service manager daemon re-exec

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) - x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.5) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

1639071 - CVE-2018-15686 systemd: line splitting via fgets() allows for state injection during daemon-reexec

1653867 - CVE-2018-16866 systemd: out-of-bounds read when parsing a crafted syslog message

1798160 - Restarting systemd-journald to load new configurations causes other daemons stop working [rhel-7.5.z]

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