Vulnerability in Gnome Gdm3
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.
EPSS: 0.011 (62.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Gnome Gdm3 — versions 3.36, 3.38
- Gnome Gnome_display_manager
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (Exploit, x_refsource_MISC, Vendor Advisory)
- security@ubuntu.com (Third Party Advisory, x_refsource_MISC)
- security@ubuntu.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-16125?
- CVE-2020-16125 is a high-severity vulnerability in Gnome Gdm3, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.2/10. Published 2020-11-10.
- How severe is CVE-2020-16125?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2020-16125 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.