Description
A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.
References (1)
Core 1
Core References
Patch, Vendor Advisory
https://github.com/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjr
Scores
CVSS v3
8.5
EPSS
0.0008
EPSS Percentile
22.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-269
Status
published
Products (2)
canonical/authd
< 0.5.4
ubuntu/authd
0 - 0.5.4Go
Published
Jun 16, 2025
Tracked Since
Feb 18, 2026