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TI-2020-01658 Aliases CVE-2020-1712GHSA-wggx-8wf7-vg3g

Use after free in [UNKNOWN] systemd

Priority LOW 36CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00456 39th percentileScored 2026-11-07
Fix Fixed systemd ([UNKNOWN]): v245-rc1Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
[UNKNOWN]systemdbefore v245-rc1v245-rc1Patch availableCNA
  • systemd Vendor[UNKNOWN] Affected before v245-rc1 Fixed in v245-rc1 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*up to 244Vulnerablesystemd
cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:a:redhat:discovery:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:migration_toolkit:1.0:*:*:*:*:*:*:*1.0VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* Versions up to 244 Vulnerable ·systemd
  • cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:discovery:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:migration_toolkit:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

  • Fix · CNA systemd ([UNKNOWN]) Fixed in v245-rc1

Red Hat 2 advisories

  • RHSA-2020:0575 Released 2020-02-24 · Red Hat rating Important
    systemd security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) systemd-239-18.el8_1.4, systemd-container-239-18.el8_1.4, systemd-devel-239-18.el8_1.4 +5
  • RHSA-2020:0564 Released 2020-02-20 · Red Hat rating Important
    systemd security update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) systemd-239-13.el8_0.7, systemd-container-239-13.el8_0.7, systemd-devel-239-13.el8_0.7 +5

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:0575
Red Hat Enterprise Linux BaseOS E4S (v. 8.0)Fixed RHSA-2020:0564
Not affected: 3 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1712
  2. 2026-10-03 Alias added: GHSA-wggx-8wf7-vg3g

References

Patch 6

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences