Amazon Linux 2023 Security Advisory: ALAS2023-2026-1636
Advisory Released Date: 2026-05-14
Advisory Updated Date: 2026-05-14
Severity:
Medium
Issue Overview:
A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations. (CVE-2026-4948)
Affected Packages:
firewalld
Issue Correction:
Run dnf update firewalld --releasever 2023.11.20260511 or dnf update --advisory ALAS2023-2026-1636 --releasever 2023.11.20260511 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
noarch:
firewalld-test-1.2.3-1.amzn2023.0.2.noarch
firewalld-filesystem-1.2.3-1.amzn2023.0.2.noarch
python3-firewall-1.2.3-1.amzn2023.0.2.noarch
firewalld-1.2.3-1.amzn2023.0.2.noarch
src:
firewalld-1.2.3-1.amzn2023.0.2.src