A local privilege escalation has been discovered in the sddm display manager < 0.19.0. If the auth file is empty, X allows any local application (= any user on the system) to connect. This is currently the case until X wrote the display number to sddm and sddm used that to write the entry into the file.
A local privilege escalation has been discovered in the sddm display manager < 0.19.0. If the auth file is empty, X allows any local application (= any user on the system) to connect. This is currently the case until X wrote the display number to sddm and sddm used that to write the entry into the file.
https://www.openwall.com/lists/oss-security/2020/11/04/2 https://github.com/sddm/sddm/commit/be202f533ab98a684c6a007e8d5b4357846bc222
Vulmon