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Security Extension Specification - X.Org
https://www.x.org/releases/X11R7.6/doc/xextproto/security.html
Clients using the Security extension must issue a SecurityQueryVersion request before any other Security request in order to negotiate a compatible protocol version; otherwise, the client will ..... Please refer to the X11 Protocol Encoding document as this section uses syntactic conventions and data types established there.Security - X.Org
https://www.x.org/wiki/Development/Documentation/Security/
Aug 25, 2013 - The X server has long included an extension, SECURITY, which provides support for a simple trusted/untrusted connection model. Untrusted clients are restricted in certain ways to prevent them from reading window contents of other clients, stealing input events, etc. Documentation for this extension is ...What is up with the X11 SECURITY extension? : linux - Reddit
https://www.reddit.com/r/linux/.../what_is_up_with_the_x11_security_extension/
Aug 4, 2016 - 11 posts - 9 authors
So it turns out apparently that there is an X11 extension no one talks about that has very little documentation that Xorg implements that...xorg - What is the difference between `ssh -Y` (trusted X11 ...
https://askubuntu.com/.../what-is-the-difference-between-ssh-y-trusted-x11-forwardin...
Apr 16, 2011 - -X Enables X11 forwarding. This can also be specified on a per-host basis in a configuration file. ... (Debian-specific: X11 forwarding is not subjected to X11 SECURITY extension restrictions by default, because too many programs cur‐ rently crash in this mode. Set the ForwardX11Trusted option to “no” to ...--x11=xorg couldn't query Security extension · Issue #1197 · netblue30 ...
https://github.com/netblue30/firejail/issues/1197
Apr 6, 2017 - On Sun, Apr 09, 2017 at 06:12:40AM -0700, netblue30 wrote: X11 security extension disables a number of regular X11 extensions. If your application uses one of them, the application will freeze. For example I start Chromium: ``` ‰ firejail --x11=xorg true Reading profile /etc/firejail/default.profile Reading ...linux - Security Concerns with X11 Forwarding - Information ...
https://security.stackexchange.com/questions/.../security-concerns-with-x11-forwardin...
May 9, 2012 - X11 was not designed with security in mind, it was designed with the idea that all programs that you're displaying are run by you and hence trusted anyway. By default, SSH subjects commands from the server to restrictions through the X11 SECURITY extension. The SECURITY extension disables some ...SSH X11 Forwarding -- Ensuring that my (trusted) computer remains ...
https://ubuntuforums.org/showthread.php?t=2290332
Aug 11, 2015 - See the X11 SECURITY extension specification for full details on the restrictions imposed on untrusted clients. . I was just hoping someone here could confirm whether or not it is the case that, in my scenario, “remote X11 clients” refers to the X server of the (non-trusted) other computer and “trusted X11 ...221984 – x11-servers/xorg-server: enable SECURITY extension
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221984
Sep 3, 2017 - Created attachment 185979 [details] enable SECURITY X server extension Attached patch enables SECURITY extension for X server. This will allow 'ssh -X' to work. Currently ssh -X fails, because 'xauth generate' can't grab auth data from running X server. This extension is enabled in xorg package for ...X SECURITY extension gone in latest Xorg; XACE not working ...
https://lists.freebsd.org/pipermail/freebsd-x11/2009-April/008232.html
Apr 17, 2009 - Chris Palmer wrote: > Hello, > > With a recent build of FreeBSD ports (I am on FreeBSD 7), the X SECURITY extension is nonexistent, and its functionality is missing. For example, "ssh -X" is equivalent to "ssh -Y", "xauth -f foo generate :0.0 . untrusted" doesn't work, and so on. I am developing a program ...Wednesday Why: Trusted and Untrusted X11 Forwarding with SSH ...
dailypackage.fedorabook.com/index.php?/archives/48-Wednesday-Why...X11...
May 9, 2007 - The -X option sets up X11 forwarding (from blue to red) and -C enables gzip compression. Notice that both are in UPPERCASE. (If you do this often, you can set up a desktop icon that will execute the command when clicked). The current version of SSH supports the X11 SECURITY extension, which ...