CVE-2019-6454

Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 17 Mar 2019, 16:38
Last modified:04 Aug 2024, 20:23

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.14% LOW
0% probability +0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

17 Mar 2019, 16:38
Published
Vulnerability first disclosed
04 Aug 2024, 20:23
Last Modified
Vulnerability information updated

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.14%• Percentile: 34%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 18.10

  • debian•debian_linux

    8.0 | 9.0

  • fedoraproject•fedora

    29

  • mcafee•web_gateway

    < 7.7.2.21 | ≥ 7.8.0, < 7.8.2.8 | ≥ 8.0.0, < 8.1.1

  • netapp•active_iq_performance_analytics_services

    na

  • opensuse•leap

    15.0

  • redhat•enterprise_linux

    8.0

  • redhat•enterprise_linux_compute_node_eus

    7.5

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_eus

    7.4 | 7.5 | 8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    7.4 | 7.5 | 8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_for_power_big_endian_eus

    7.4

  • redhat•enterprise_linux_for_power_little_endian

    8.0

  • redhat•enterprise_linux_for_power_little_endian_eus

    7.4 | 7.5 | 8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_server_aus

    7.3 | 7.4 | 7.6 | 8.2 | 8.4

  • redhat•enterprise_linux_server_eus

    7.6

  • redhat•enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

    7.3 | 7.4 | 8.0 | 8.1 | 8.2

  • redhat•enterprise_linux_server_tus

    7.3 | 7.4 | 7.6 | 8.2 | 8.4

  • redhat•enterprise_linux_server_update_services_for_sap_solutions

    7.3 | 7.4 | 8.0 | 8.1 | 8.2

  • redhat•enterprise_linux_workstation

    7.0

  • systemd_project•systemd

    239

References (18)