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109 lines
2.9 KiB
109 lines
2.9 KiB
7 years ago
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diff --git a/openbsd-compat/port-linux-sshd.c b/openbsd-compat/port-linux-sshd.c
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index c18524e..d04f4ed 100644
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--- a/openbsd-compat/port-linux-sshd.c
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+++ b/openbsd-compat/port-linux-sshd.c
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@@ -409,6 +409,25 @@ sshd_selinux_setup_exec_context(char *pwname)
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debug3("%s: done", __func__);
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}
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+void
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+sshd_selinux_copy_context(void)
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+{
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+ security_context_t *ctx;
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+
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+ if (!ssh_selinux_enabled())
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+ return;
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+
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+ if (getexeccon((security_context_t *)&ctx) != 0) {
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+ logit("%s: getcon failed with %s", __func__, strerror (errno));
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+ return;
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+ }
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+ if (ctx != NULL) {
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+ if (setcon(ctx) != 0)
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+ logit("%s: setcon failed with %s", __func__, strerror (errno));
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+ freecon(ctx);
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+ }
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+}
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+
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#endif
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#endif
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diff --git a/openbsd-compat/port-linux.h b/openbsd-compat/port-linux.h
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index 8ef6cc4..b18893c 100644
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--- a/openbsd-compat/port-linux.h
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+++ b/openbsd-compat/port-linux.h
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@@ -25,6 +25,7 @@ void ssh_selinux_setup_pty(char *, const char *);
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void ssh_selinux_change_context(const char *);
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void ssh_selinux_setfscreatecon(const char *);
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+void sshd_selinux_copy_context(void);
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void sshd_selinux_setup_exec_context(char *);
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#endif
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diff --git a/session.c b/session.c
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index 2bcf818..b5dc144 100644
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--- a/session.c
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+++ b/session.c
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@@ -1538,6 +1538,9 @@ do_setusercontext(struct passwd *pw)
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pw->pw_uid);
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chroot_path = percent_expand(tmp, "h", pw->pw_dir,
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"u", pw->pw_name, (char *)NULL);
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+#ifdef WITH_SELINUX
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+ sshd_selinux_copy_context();
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+#endif
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safely_chroot(chroot_path, pw->pw_uid);
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free(tmp);
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free(chroot_path);
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@@ -1565,6 +1568,12 @@ do_setusercontext(struct passwd *pw)
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/* Permanently switch to the desired uid. */
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permanently_set_uid(pw);
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#endif
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+
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+#ifdef WITH_SELINUX
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+ if (options.chroot_directory == NULL ||
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+ strcasecmp(options.chroot_directory, "none") == 0)
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+ sshd_selinux_copy_context();
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+#endif
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} else if (options.chroot_directory != NULL &&
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strcasecmp(options.chroot_directory, "none") != 0) {
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fatal("server lacks privileges to chroot to ChrootDirectory");
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@@ -1826,9 +1835,6 @@ do_child(Session *s, const char *command)
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argv[i] = NULL;
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optind = optreset = 1;
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__progname = argv[0];
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-#ifdef WITH_SELINUX
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- ssh_selinux_change_context("sftpd_t");
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-#endif
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exit(sftp_server_main(i, argv, s->pw));
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}
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diff --git a/sshd.c b/sshd.c
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index 07f9926..a97f8b7 100644
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--- a/sshd.c
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+++ b/sshd.c
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@@ -632,6 +632,10 @@ privsep_preauth_child(void)
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/* Demote the private keys to public keys. */
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demote_sensitive_data();
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+#ifdef WITH_SELINUX
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+ ssh_selinux_change_context("sshd_net_t");
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+#endif
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+
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/* Demote the child */
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if (getuid() == 0 || geteuid() == 0) {
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/* Change our root directory */
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@@ -768,6 +772,13 @@ privsep_postauth(Authctxt *authctxt)
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do_setusercontext(authctxt->pw);
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skip:
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+#ifdef WITH_SELINUX
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+ /* switch SELinux content for root too */
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+ if (authctxt->pw->pw_uid == 0) {
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+ sshd_selinux_copy_context();
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+ }
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+#endif
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+
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/* It is safe now to apply the key state */
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monitor_apply_keystate(pmonitor);
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