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Red Hat: CVE-2019-3843: CVE-2019-3843 systemd: services with DynamicUser can create SUID/SGID binaries (Multiple Advisories)

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Red Hat: CVE-2019-3843: CVE-2019-3843 systemd: services with DynamicUser can create SUID/SGID binaries (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
04/26/2019
Created
05/01/2020
Added
04/29/2020
Modified
12/15/2023

Description

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

Solution(s)

  • redhat-upgrade-systemd
  • redhat-upgrade-systemd-container
  • redhat-upgrade-systemd-container-debuginfo
  • redhat-upgrade-systemd-debuginfo
  • redhat-upgrade-systemd-debugsource
  • redhat-upgrade-systemd-devel
  • redhat-upgrade-systemd-journal-remote
  • redhat-upgrade-systemd-journal-remote-debuginfo
  • redhat-upgrade-systemd-libs
  • redhat-upgrade-systemd-libs-debuginfo
  • redhat-upgrade-systemd-pam
  • redhat-upgrade-systemd-pam-debuginfo
  • redhat-upgrade-systemd-tests
  • redhat-upgrade-systemd-tests-debuginfo
  • redhat-upgrade-systemd-udev
  • redhat-upgrade-systemd-udev-debuginfo

References

  • 108116
  • CVE-2019-3843
  • RHSA-2020:1794

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