What is CVE-2020-16125?

CVE-2020-16125 is a vulnerability in gdm3 versions before 3.36.2 or 3.38.2 that allows the gnome-initial-setup to start if gdm3 can't contact the accountservice service via dbus in a timely manner.

What is the severity of CVE-2020-16125?

CVE-2020-16125 has a severity rating of 6.8 (high).

Which software versions are affected by CVE-2020-16125?

The affected software versions for CVE-2020-16125 are gdm3 versions before 3.36.2 and versions between 3.38.0 and 3.38.2.

How can this vulnerability be exploited?

This vulnerability can be exploited by a local user to create a new privileged account.

Are there any references for CVE-2020-16125?

Yes, you can find references for CVE-2020-16125 at the following links: [Link 1](https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314), [Link 2](https://gitlab.gnome.org/GNOME/gdm/-/issues/642), [Link 3](https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon).

Vulnerability/
CVE-2020-16125

high

7.2

CWE

754

10/11/2020

17/9/2024

CVE-2020-16125: gdm3 would start gnome-initial-setup if it cannot contact accountservice

First published: Tue Nov 10 2020(Updated: )

gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.

Credit: security@ubuntu.com

Affected Software	Affected Version	How to fix
Gnome Gnome Display Manager	<3.36.2
Gnome Gnome Display Manager	>=3.38.0<3.38.2

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Frequently Asked Questions

What is CVE-2020-16125?
CVE-2020-16125 is a vulnerability in gdm3 versions before 3.36.2 or 3.38.2 that allows the gnome-initial-setup to start if gdm3 can't contact the accountservice service via dbus in a timely manner.
What is the severity of CVE-2020-16125?
CVE-2020-16125 has a severity rating of 6.8 (high).
Which software versions are affected by CVE-2020-16125?
The affected software versions for CVE-2020-16125 are gdm3 versions before 3.36.2 and versions between 3.38.0 and 3.38.2.
How can this vulnerability be exploited?
This vulnerability can be exploited by a local user to create a new privileged account.
Are there any references for CVE-2020-16125?
Yes, you can find references for CVE-2020-16125 at the following links: [Link 1](https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314), [Link 2](https://gitlab.gnome.org/GNOME/gdm/-/issues/642), [Link 3](https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon).

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agent/references
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agent/title
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agent/description
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agent/first-publish-date
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vendor/gnome
canonical/gnome gnome display manager
version/gnome gnome display manager/3.38.0

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