CVE-2020-16125 is a vulnerability in Gnome Display Manager
Published on November 10, 2020
gdm3 would start gnome-initial-setup if it cannot contact accountservice
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.
Vulnerability Analysis
CVE-2020-16125 can be exploited with physical access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Improper Check for Unusual or Exceptional Conditions
The software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.
Products Associated with CVE-2020-16125
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Affected Versions
Gnome GDM3:- Version 3.36 and below 3.36.4 is affected.
- Version 3.38 and below 3.38.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.