Description
The authentication setup in XWayland 1.16.x and 1.17.x before 1.17.2 starts the server in non-authenticating mode, which allows local users to read from or send information to arbitrary X11 clients via vectors involving a UNIX socket.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xorg-server | 2:1.17.2-1 | — |
| Debian 13 | xorg-server | 2:1.17.2-1 | — |
| Debian 12 | xorg-server | 2:1.17.2-1 | — |
References
- [wayland-devel] 20150610 X.Org/Wayland Security Advisory: Missing authentication in XWayland mailing-list
- 75535 vdb-entry
- GLSA-201701-64 vendor-advisory
- openSUSE-SU-2015:1095 vendor-advisory