lightdm before 0.9.6 writes in .dmrc and Xauthority files using root permissions while the files are in user controlled folders. A local user can overwrite root-owned files via a symlink, which can allow possible privilege escalation.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade lightdm | Jul 30, 2024 | Nov 19, 2019 |
| Suse | — | Upgrade liblightdm-gobject-1-0Upgrade lightdmUpgrade lightdm-lang | Aug 9, 2024 | Nov 19, 2019 |
| Ubuntu | — | Upgrade lightdm | Nov 19, 2024 | Nov 19, 2019 |
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