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Sicherheit: Denial of Service in systemd
Aktuelle Meldungen Distributionen
Name: Denial of Service in systemd
ID: RHSA-2020:4007-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux
Datum: Di, 29. September 2020, 23:32
Referenzen: https://access.redhat.com/security/cve/CVE-2019-20386
Applikationen: systemd

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Low: systemd security and bug fix update
Advisory ID: RHSA-2020:4007-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4007
Issue date: 2020-09-29
CVE Names: CVE-2019-20386
=====================================================================

1. Summary:

An update for systemd is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Low. 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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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: memory leak in button_open() in login/logind-button.c when udev
events are received (CVE-2019-20386)

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 7.9 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/):

1244691 - systemd journal remote service does not work when multiple virtual
machines send logs via journal upload service
1679934 - Spurious "Failed to propagate agent release message" messages
on shutdown
1689344 - please add kptr_restrict=1 to /usr/lib/sysctl.conf/50-default.conf
1693374 - Using quotas on iSCSI-hosed filesystems causes systemd "ordering
cycle" resulting in random services not starting on boot
1757704 - Restarting systemd-journald to load new configurations causes other
daemons stop working
1766477 - Systemd does not attempt to kill child processes if ExecStopPost is
set
1769923 - timer: don't use persistent file timestamps from the future
1769928 - systemd leaks memory (in dbus) and spends its time sending
PropertiesChanged notifications
1770158 - sd-bus: bump message queue size
1775291 - Services with Restart=always fail to restart when it has a dependent
service with StopWhenUnneeded=true
1793979 - CVE-2019-20386 systemd: memory leak in button_open() in
login/logind-button.c when udev events are received
1804757 - Mount units end up in erroneous state (not-found active mounted)
after daemon reload
1809053 - [Azure][RHEL7.6]Inconsistent creation of symlinks in
/dev/disk/by-path in Azure VMs
1812889 - Lazy setup of inotify_fd in sd-journal may cause clients to leak file
descriptors
1814028 - Veritas NetBackup Engineering would like an official RHEL method to
create /etc/udev/rules.d/60-persistent-tape.rules
1817576 - Backport systemd CollectMode for runc
1828953 - systemd segfaults reloading while serializing a service executing a
ExecStartPost command [rhel-7.7]
1829754 - systemctl try-restart command hangs indefinitely while being executed
during a yum update
1832816 - [Azure][RHEL-7.9]Error in `/usr/lib/systemd/systemd-udevd':
double free or corruption

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
systemd-219-78.el7.src.rpm

x86_64:
libgudev1-219-78.el7.i686.rpm
libgudev1-219-78.el7.x86_64.rpm
systemd-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-libs-219-78.el7.i686.rpm
systemd-libs-219-78.el7.x86_64.rpm
systemd-python-219-78.el7.x86_64.rpm
systemd-sysv-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
libgudev1-devel-219-78.el7.i686.rpm
libgudev1-devel-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-devel-219-78.el7.i686.rpm
systemd-devel-219-78.el7.x86_64.rpm
systemd-journal-gateway-219-78.el7.x86_64.rpm
systemd-networkd-219-78.el7.x86_64.rpm
systemd-resolved-219-78.el7.i686.rpm
systemd-resolved-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
systemd-219-78.el7.src.rpm

x86_64:
libgudev1-219-78.el7.i686.rpm
libgudev1-219-78.el7.x86_64.rpm
systemd-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-libs-219-78.el7.i686.rpm
systemd-libs-219-78.el7.x86_64.rpm
systemd-python-219-78.el7.x86_64.rpm
systemd-sysv-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
libgudev1-devel-219-78.el7.i686.rpm
libgudev1-devel-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-devel-219-78.el7.i686.rpm
systemd-devel-219-78.el7.x86_64.rpm
systemd-journal-gateway-219-78.el7.x86_64.rpm
systemd-networkd-219-78.el7.x86_64.rpm
systemd-resolved-219-78.el7.i686.rpm
systemd-resolved-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
systemd-219-78.el7.src.rpm

ppc64:
libgudev1-219-78.el7.ppc.rpm
libgudev1-219-78.el7.ppc64.rpm
libgudev1-devel-219-78.el7.ppc.rpm
libgudev1-devel-219-78.el7.ppc64.rpm
systemd-219-78.el7.ppc64.rpm
systemd-debuginfo-219-78.el7.ppc.rpm
systemd-debuginfo-219-78.el7.ppc64.rpm
systemd-devel-219-78.el7.ppc.rpm
systemd-devel-219-78.el7.ppc64.rpm
systemd-libs-219-78.el7.ppc.rpm
systemd-libs-219-78.el7.ppc64.rpm
systemd-python-219-78.el7.ppc64.rpm
systemd-sysv-219-78.el7.ppc64.rpm

ppc64le:
libgudev1-219-78.el7.ppc64le.rpm
libgudev1-devel-219-78.el7.ppc64le.rpm
systemd-219-78.el7.ppc64le.rpm
systemd-debuginfo-219-78.el7.ppc64le.rpm
systemd-devel-219-78.el7.ppc64le.rpm
systemd-libs-219-78.el7.ppc64le.rpm
systemd-python-219-78.el7.ppc64le.rpm
systemd-sysv-219-78.el7.ppc64le.rpm

s390x:
libgudev1-219-78.el7.s390.rpm
libgudev1-219-78.el7.s390x.rpm
libgudev1-devel-219-78.el7.s390.rpm
libgudev1-devel-219-78.el7.s390x.rpm
systemd-219-78.el7.s390x.rpm
systemd-debuginfo-219-78.el7.s390.rpm
systemd-debuginfo-219-78.el7.s390x.rpm
systemd-devel-219-78.el7.s390.rpm
systemd-devel-219-78.el7.s390x.rpm
systemd-libs-219-78.el7.s390.rpm
systemd-libs-219-78.el7.s390x.rpm
systemd-python-219-78.el7.s390x.rpm
systemd-sysv-219-78.el7.s390x.rpm

x86_64:
libgudev1-219-78.el7.i686.rpm
libgudev1-219-78.el7.x86_64.rpm
libgudev1-devel-219-78.el7.i686.rpm
libgudev1-devel-219-78.el7.x86_64.rpm
systemd-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-devel-219-78.el7.i686.rpm
systemd-devel-219-78.el7.x86_64.rpm
systemd-libs-219-78.el7.i686.rpm
systemd-libs-219-78.el7.x86_64.rpm
systemd-python-219-78.el7.x86_64.rpm
systemd-sysv-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
systemd-debuginfo-219-78.el7.ppc.rpm
systemd-debuginfo-219-78.el7.ppc64.rpm
systemd-journal-gateway-219-78.el7.ppc64.rpm
systemd-networkd-219-78.el7.ppc64.rpm
systemd-resolved-219-78.el7.ppc.rpm
systemd-resolved-219-78.el7.ppc64.rpm

ppc64le:
systemd-debuginfo-219-78.el7.ppc64le.rpm
systemd-journal-gateway-219-78.el7.ppc64le.rpm
systemd-networkd-219-78.el7.ppc64le.rpm
systemd-resolved-219-78.el7.ppc64le.rpm

s390x:
systemd-debuginfo-219-78.el7.s390.rpm
systemd-debuginfo-219-78.el7.s390x.rpm
systemd-journal-gateway-219-78.el7.s390x.rpm
systemd-networkd-219-78.el7.s390x.rpm
systemd-resolved-219-78.el7.s390.rpm
systemd-resolved-219-78.el7.s390x.rpm

x86_64:
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-journal-gateway-219-78.el7.x86_64.rpm
systemd-networkd-219-78.el7.x86_64.rpm
systemd-resolved-219-78.el7.i686.rpm
systemd-resolved-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
systemd-219-78.el7.src.rpm

x86_64:
libgudev1-219-78.el7.i686.rpm
libgudev1-219-78.el7.x86_64.rpm
libgudev1-devel-219-78.el7.i686.rpm
libgudev1-devel-219-78.el7.x86_64.rpm
systemd-219-78.el7.x86_64.rpm
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-devel-219-78.el7.i686.rpm
systemd-devel-219-78.el7.x86_64.rpm
systemd-libs-219-78.el7.i686.rpm
systemd-libs-219-78.el7.x86_64.rpm
systemd-python-219-78.el7.x86_64.rpm
systemd-sysv-219-78.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
systemd-debuginfo-219-78.el7.i686.rpm
systemd-debuginfo-219-78.el7.x86_64.rpm
systemd-journal-gateway-219-78.el7.x86_64.rpm
systemd-networkd-219-78.el7.x86_64.rpm
systemd-resolved-219-78.el7.i686.rpm
systemd-resolved-219-78.el7.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-2019-20386
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_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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