vulnerability
Ubuntu: USN-3285-1 (CVE-2017-8900): LightDM vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | May 11, 2017 | May 12, 2017 | Apr 25, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
May 11, 2017
Added
May 12, 2017
Modified
Apr 25, 2025
Description
Tyler Hicks discovered that LightDM did not confine the user session for guest
users. An attacker with physical access could use this issue to access files
and other resources that they should not be able to access. In the default
installation, this includes files in the home directories of other users on the
system. This update fixes the issue by disabling the guest session. It may be
re-enabled in a future update. Please see the bug referenced below for
instructions on how to manually re-enable the guest session.
Solution
ubuntu-upgrade-lightdm
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