vulnerability
Arch Linux: Privilege escalation (CVE-2020-16125)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | Nov 10, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Nov 10, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
gdm before 3.38.2 can be tricked into launching gnome-initial-setup, enabling an unprivileged user to create a new user account for themselves. The new account is a member of the sudo group, so this enables the unprivileged user to obtain admin privileges.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-16125
- https://attackerkb.com/topics/CVE-2020-16125
- URL-https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314
- URL-https://gitlab.gnome.org/GNOME/gdm/-/issues/642
- URL-https://security.archlinux.org/ASA-202011-5
- URL-https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon
- CWE-754
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