Medium severity · published Nov 10, 2020
CVE-2020-16125
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…
6.8
CVSS
1.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GD
Gnome Display Manager · Gnome
before 3.36.2; 3.38.0 before 3.38.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-16125
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-16125
Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314
Exploit
https://gitlab.gnome.org/GNOME/gdm/-/issues/642
Exploit
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon
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