Vulnerability identifier: #VU25332
Vulnerability risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-416
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
systemd
Server applications /
Other server solutions
Vendor: Freedesktop.org
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error when processing dbus messages during asynchronous Polkit queries in bus-polkit.c in systemd. A local unprivileged user can send a specially crafted dbus message, trigger a use-after-free error and crash services or execute arbitrary code on the system with elevated privileges.
Mitigation
Install update from vendor's website.
Vulnerable software versions
systemd: 244.2 - 244.3
External links
http://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2
http://github.com/systemd/systemd-stable/commit/e2d4cb9843c50eff76e9104fec6b448c0d7c8814
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.