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Amazon Linux AMI 2: CVE-2019-6454: Security patch for systemd (ALAS-2019-1164)

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Amazon Linux AMI 2: CVE-2019-6454: Security patch for systemd (ALAS-2019-1164)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
03/21/2019
Created
05/08/2020
Added
04/27/2020
Modified
09/30/2022

Description

An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).

Solution(s)

  • amazon-linux-ami-2-upgrade-libgudev1
  • amazon-linux-ami-2-upgrade-libgudev1-devel
  • amazon-linux-ami-2-upgrade-systemd
  • amazon-linux-ami-2-upgrade-systemd-debuginfo
  • amazon-linux-ami-2-upgrade-systemd-devel
  • amazon-linux-ami-2-upgrade-systemd-journal-gateway
  • amazon-linux-ami-2-upgrade-systemd-libs
  • amazon-linux-ami-2-upgrade-systemd-networkd
  • amazon-linux-ami-2-upgrade-systemd-python
  • amazon-linux-ami-2-upgrade-systemd-resolved
  • amazon-linux-ami-2-upgrade-systemd-sysv

References

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