High [CVE-2020-1712] heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages
This high-severity Red Hat Linux advisory covers CVE-2020-1712 affecting Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions, Red Hat package: systemd.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
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.
This issue did not affect the versions of systemd as shipped with Red Hat Enterprise Linux 7 as there is no service that performs asynchronous polkit requests in a vulnerable way. The version of systemd delivered in OpenShift Container Platform 4.1 and included in CoreOS images has been superseded by the version delivered in Red Hat Enterprise Linux 8.
CoreOS updates for systemd in will be consumed from Red Hat Enterprise Linux 8 channels. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-416. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.
Red Hat lists Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4 as not affected. Red Hat fixing advisory: RHSA-2020:0575, RHSA-2020:0564.
Affected products named by the advisory: Red Hat package: systemd.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 15 hours ago·verify at source
- systemd-0:239-18.el8_1.4
- systemd-0:239-13.el8_0.7
- RHSA-2020:0575
- RHSA-2020:0564
Official advisory · high-confidence parse· fetched 15 hours ago·verify at source
Mitigation
Upgrade to a fixed release: systemd-0:239-18.el8_1.4, systemd-0:239-13.el8_0.7, RHSA-2020:0575, RHSA-2020:0564. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 15 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.