# HG changeset patch
# Parent  a60c0d88667efe0a64c030168950b69476af1622
# --used to be called '-xauth'
try to remove xauth cookies on logout

bnc#98815

diff --git a/openssh-7.7p1/session.c b/openssh-7.7p1/session.c
--- openssh-7.7p1/session.c
+++ openssh-7.7p1/session.c
@@ -2302,16 +2302,44 @@ session_close(struct ssh *ssh, Session *
 	u_int i;
 
 	verbose("Close session: user %s from %.200s port %d id %d",
 	    s->pw->pw_name,
 	    ssh_remote_ipaddr(ssh),
 	    ssh_remote_port(ssh),
 	    s->self);
 
+	if ((s->display != NULL) && (s->auth_proto != NULL) &&
+	    (s->auth_data != NULL) && (options.xauth_location != NULL)) {
+		pid_t pid;
+		FILE *f;
+		char cmd[1024];
+		struct passwd * pw = s->pw;
+
+		if (!(pid = fork())) {
+			permanently_set_uid(pw);
+
+			/* Remove authority data from .Xauthority if appropriate. */
+			debug("Running %.500s remove %.100s\n",
+			    options.xauth_location, s->auth_display);
+
+			snprintf(cmd, sizeof cmd, "unset XAUTHORITY && HOME=\"%.200s\" %s -q -",
+                     	    s->pw->pw_dir, options.xauth_location);
+            		f = popen(cmd, "w");
+			if (f) {
+				fprintf(f, "remove %s\n", s->auth_display);
+				pclose(f);
+			} else
+				error("Could not run %s\n", cmd);
+			exit(0);
+		} else if (pid > 0) {
+			waitpid(pid, NULL, 0);
+		}
+	}
+
 	if (s->ttyfd != -1)
 		session_pty_cleanup(s);
 	free(s->term);
 	free(s->display);
 	free(s->x11_chanids);
 	free(s->auth_display);
 	free(s->auth_data);
 	free(s->auth_proto);