[ASA-202002-8] systemd: privilege escalation
foxboron at archlinux.org
Mon Feb 17 16:53:14 UTC 2020
Arch Linux Security Advisory ASA-202002-8
Date : 2020-02-12
CVE-ID : CVE-2020-1712
Package : systemd
Type : privilege escalation
Remote : No
Link : https://security.archlinux.org/AVG-1094
The package systemd before version 244.2-1 is vulnerable to privilege
Upgrade to 244.2-1.
# pacman -Syu "systemd>=244.2-1"
The problem has been fixed upstream in version 244.2.
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.
A local unprivileged attacker is able to crash the system or execute
arbitrary code as root by abusing polkit caching mechanisms.
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