vulnerability
Arch Linux: Privilege escalation (CVE-2020-1712)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | Mar 31, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Mar 31, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A heap use-after-free vulnerability was found in systemd before version 244.2, 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.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-1712
- https://attackerkb.com/topics/CVE-2020-1712
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712
- URL-https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54
- URL-https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb
- URL-https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d
- URL-https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2
- URL-https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html
- URL-https://security.archlinux.org/ASA-202002-8
- URL-https://www.openwall.com/lists/oss-security/2020/02/05/1
- CWE-416
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