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