Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.
| Software | From | Fixed in |
|---|---|---|
| lightdm_project / lightdm | 1.16.2 | 1.16.2.x |
| lightdm_project / lightdm | 1.16.4 | 1.16.4.x |
| lightdm_project / lightdm | 1.16.1 | 1.16.1.x |
| lightdm_project / lightdm | 1.16 | 1.16.x |
| lightdm_project / lightdm | 1.16.3 | 1.16.3.x |
| lightdm_project / lightdm | 1.14.3 | 1.14.3.x |