CVE-2020-1712

Publication date 5 February 2020

Last updated 18 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

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.

Status

Package Ubuntu Release Status
systemd 25.10 questing
Fixed 244.1-0ubuntu3
25.04 plucky
Fixed 244.1-0ubuntu3
24.10 oracular
Fixed 244.1-0ubuntu3
24.04 LTS noble
Fixed 244.1-0ubuntu3
23.10 mantic
Fixed 244.1-0ubuntu3
23.04 lunar
Fixed 244.1-0ubuntu3
22.10 kinetic
Fixed 244.1-0ubuntu3
22.04 LTS jammy
Fixed 244.1-0ubuntu3
21.10 impish
Fixed 244.1-0ubuntu3
21.04 hirsute
Fixed 244.1-0ubuntu3
20.10 groovy
Fixed 244.1-0ubuntu3
20.04 LTS focal
Fixed 244.1-0ubuntu3
19.10 eoan
Fixed 242-7ubuntu3.6
18.04 LTS bionic
Fixed 237-3ubuntu10.38
16.04 LTS xenial
Fixed 229-4ubuntu21.27
14.04 LTS trusty
Vulnerable

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
systemd

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4269-1
    • systemd vulnerabilities
    • 5 February 2020

Other references