Vulnerability Monitor

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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 derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.

Published

2020-11-10T05:15:11.893

Last Modified

2024-11-21T05:06:48.720

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.2 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-754
Type: Primary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnome	gnome_display_manager	< 3.36.2	Yes
Application	gnome	gnome_display_manager	< 3.38.2	Yes

References

https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314 Third Party Advisory ([email protected])
https://gitlab.gnome.org/GNOME/gdm/-/issues/642 Exploit, Vendor Advisory ([email protected])
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon Exploit, Third Party Advisory ([email protected])
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.gnome.org/GNOME/gdm/-/issues/642 Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)