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- markus@cvs.openbsd.org 2001/02/12 16:16:23
[auth-passwd.c auth.c auth.h auth1.c auth2.c servconf.c servconf.h
ssh-keygen.c sshd.8]
PermitRootLogin={yes,without-password,forced-commands-only,no}
(before this change, root could login even if PermitRootLogin==no)
This commit is contained in:
Ben Lindstrom
parent
06b33aa0e8
commit
d8a9021f36
@ -15,6 +15,11 @@
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3) or the 'MACs' keyword in ssh(d)_config
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4) add hmac-{md5,sha1}-96
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ok stevesk@, provos@
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- markus@cvs.openbsd.org 2001/02/12 16:16:23
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[auth-passwd.c auth.c auth.h auth1.c auth2.c servconf.c servconf.h
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ssh-keygen.c sshd.8]
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PermitRootLogin={yes,without-password,forced-commands-only,no}
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(before this change, root could login even if PermitRootLogin==no)
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20010214
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- (djm) Don't try to close PAM session or delete credentials if the
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@ -3943,4 +3948,4 @@
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- Wrote replacements for strlcpy and mkdtemp
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- Released 1.0pre1
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$Id: ChangeLog,v 1.763 2001/02/15 03:01:59 mouring Exp $
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$Id: ChangeLog,v 1.764 2001/02/15 03:08:27 mouring Exp $
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@ -36,7 +36,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: auth-passwd.c,v 1.20 2001/01/21 19:05:42 markus Exp $");
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RCSID("$OpenBSD: auth-passwd.c,v 1.21 2001/02/12 16:16:23 markus Exp $");
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#if !defined(USE_PAM) && !defined(HAVE_OSF_SIA)
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@ -110,7 +110,7 @@ auth_password(struct passwd * pw, const char *password)
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if (pw == NULL)
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return 0;
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#ifndef HAVE_CYGWIN
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if (pw->pw_uid == 0 && options.permit_root_login == 2)
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if (pw->pw_uid == 0 && options.permit_root_login != PERMIT_YES)
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return 0;
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#endif
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#ifdef HAVE_CYGWIN
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29
auth.c
29
auth.c
@ -23,7 +23,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: auth.c,v 1.16 2001/02/04 15:32:22 stevesk Exp $");
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RCSID("$OpenBSD: auth.c,v 1.17 2001/02/12 16:16:23 markus Exp $");
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#ifdef HAVE_LOGIN_H
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#include <login.h>
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@ -216,19 +216,26 @@ auth_log(Authctxt *authctxt, int authenticated, char *method, char *info)
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}
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/*
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* Check if the user is logging in as root and root logins are disallowed.
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* Note that root login is _allways_ allowed for forced commands.
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* Check whether root logins are disallowed.
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*/
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int
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auth_root_allowed(void)
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auth_root_allowed(char *method)
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{
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if (options.permit_root_login)
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switch (options.permit_root_login) {
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case PERMIT_YES:
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return 1;
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if (forced_command) {
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log("Root login accepted for forced command.");
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return 1;
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} else {
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log("ROOT LOGIN REFUSED FROM %.200s", get_remote_ipaddr());
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return 0;
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break;
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case PERMIT_NO_PASSWD:
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if (strcmp(method, "password") != 0)
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return 1;
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break;
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case PERMIT_FORCED_ONLY:
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if (forced_command) {
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log("Root login accepted for forced command.");
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return 1;
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}
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break;
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}
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log("ROOT LOGIN REFUSED FROM %.200s", get_remote_ipaddr());
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return 0;
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}
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4
auth.h
4
auth.h
@ -21,7 +21,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $OpenBSD: auth.h,v 1.10 2001/01/21 19:05:43 markus Exp $
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* $OpenBSD: auth.h,v 1.11 2001/02/12 16:16:23 markus Exp $
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*/
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#ifndef AUTH_H
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#define AUTH_H
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@ -112,7 +112,7 @@ void do_authentication2(void);
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Authctxt *authctxt_new(void);
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void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
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void userauth_reply(Authctxt *authctxt, int authenticated);
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int auth_root_allowed(void);
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int auth_root_allowed(char *method);
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int auth2_challenge(Authctxt *authctxt, char *devs);
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5
auth1.c
5
auth1.c
@ -10,7 +10,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: auth1.c,v 1.15 2001/02/07 22:35:45 markus Exp $");
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RCSID("$OpenBSD: auth1.c,v 1.16 2001/02/12 16:16:23 markus Exp $");
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#include "xmalloc.h"
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#include "rsa.h"
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@ -316,7 +316,8 @@ do_authloop(Authctxt *authctxt)
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}
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#else
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/* Special handling for root */
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if (authenticated && authctxt->pw->pw_uid == 0 && !auth_root_allowed())
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if (authenticated && authctxt->pw->pw_uid == 0 &&
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!auth_root_allowed(get_authname(type)))
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authenticated = 0;
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#endif
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#ifdef USE_PAM
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5
auth2.c
5
auth2.c
@ -23,7 +23,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: auth2.c,v 1.40 2001/02/10 12:52:02 markus Exp $");
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RCSID("$OpenBSD: auth2.c,v 1.41 2001/02/12 16:16:23 markus Exp $");
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#include <openssl/evp.h>
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@ -230,7 +230,8 @@ input_userauth_request(int type, int plen, void *ctxt)
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authctxt->user);
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/* Special handling for root */
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if (authenticated && authctxt->pw->pw_uid == 0 && !auth_root_allowed())
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if (authenticated && authctxt->pw->pw_uid == 0 &&
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!auth_root_allowed(method))
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authenticated = 0;
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#ifdef USE_PAM
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21
servconf.c
21
servconf.c
@ -10,7 +10,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: servconf.c,v 1.66 2001/02/11 12:59:25 markus Exp $");
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RCSID("$OpenBSD: servconf.c,v 1.67 2001/02/12 16:16:23 markus Exp $");
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#ifdef KRB4
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#include <krb.h>
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@ -51,7 +51,7 @@ initialize_server_options(ServerOptions *options)
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options->server_key_bits = -1;
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options->login_grace_time = -1;
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options->key_regeneration_time = -1;
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options->permit_root_login = -1;
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options->permit_root_login = PERMIT_NOT_SET;
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options->ignore_rhosts = -1;
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options->ignore_user_known_hosts = -1;
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options->print_motd = -1;
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@ -122,8 +122,8 @@ fill_default_server_options(ServerOptions *options)
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options->login_grace_time = 600;
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if (options->key_regeneration_time == -1)
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options->key_regeneration_time = 3600;
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if (options->permit_root_login == -1)
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options->permit_root_login = 1; /* yes */
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if (options->permit_root_login == PERMIT_NOT_SET)
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options->permit_root_login = PERMIT_YES;
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if (options->ignore_rhosts == -1)
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options->ignore_rhosts = 1;
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if (options->ignore_user_known_hosts == -1)
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@ -453,14 +453,17 @@ parse_filename:
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exit(1);
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}
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if (strcmp(arg, "without-password") == 0)
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value = 2;
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value = PERMIT_NO_PASSWD;
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else if (strcmp(arg, "forced-commands-only") == 0)
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value = PERMIT_FORCED_ONLY;
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else if (strcmp(arg, "yes") == 0)
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value = 1;
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value = PERMIT_YES;
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else if (strcmp(arg, "no") == 0)
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value = 0;
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value = PERMIT_NO;
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else {
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fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n",
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filename, linenum, arg);
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fprintf(stderr, "%s line %d: Bad yes/"
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"without-password/forced-commands-only/no "
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"argument: %s\n", filename, linenum, arg);
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exit(1);
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}
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if (*intptr == -1)
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12
servconf.h
12
servconf.h
@ -11,7 +11,7 @@
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* called by a name other than "ssh" or "Secure Shell".
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*/
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/* RCSID("$OpenBSD: servconf.h,v 1.37 2001/02/11 12:59:25 markus Exp $"); */
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/* RCSID("$OpenBSD: servconf.h,v 1.38 2001/02/12 16:16:23 markus Exp $"); */
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#ifndef SERVCONF_H
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#define SERVCONF_H
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@ -25,6 +25,14 @@
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#define MAX_SUBSYSTEMS 256 /* Max # subsystems. */
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#define MAX_HOSTKEYS 256 /* Max # hostkeys. */
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/* permit_root_login */
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#define PERMIT_NOT_SET -1
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#define PERMIT_NO 0
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#define PERMIT_FORCED_ONLY 1
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#define PERMIT_NO_PASSWD 2
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#define PERMIT_YES 3
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typedef struct {
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u_int num_ports;
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u_int ports_from_cmdline;
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@ -38,7 +46,7 @@ typedef struct {
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int login_grace_time; /* Disconnect if no auth in this time
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* (sec). */
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int key_regeneration_time; /* Server key lifetime (seconds). */
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int permit_root_login; /* If true, permit root login. */
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int permit_root_login; /* PERMIT_*, see above */
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int ignore_rhosts; /* Ignore .rhosts and .shosts. */
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int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
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* for RhostsRsaAuth */
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@ -12,7 +12,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: ssh-keygen.c,v 1.42 2001/02/04 15:32:26 stevesk Exp $");
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RCSID("$OpenBSD: ssh-keygen.c,v 1.43 2001/02/12 16:16:23 markus Exp $");
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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@ -532,6 +532,7 @@ do_change_comment(struct passwd *pw)
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public = key_new(KEY_RSA1);
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if (!load_public_key(identity_file, public, NULL)) {
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printf("%s is not a valid key file.\n", identity_file);
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printf("Comments are only supported in RSA1 keys\n");
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exit(1);
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}
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23
sshd.8
23
sshd.8
@ -34,7 +34,7 @@
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $OpenBSD: sshd.8,v 1.93 2001/02/11 12:59:25 markus Exp $
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.\" $OpenBSD: sshd.8,v 1.94 2001/02/12 16:16:24 markus Exp $
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.Dd September 25, 1999
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.Dt SSHD 8
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.Os
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@ -552,21 +552,26 @@ Specifies whether the root can log in using
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.Xr ssh 1 .
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The argument must be
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.Dq yes ,
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.Dq without-password
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.Dq without-password ,
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.Dq forced-commands-only
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or
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.Dq no .
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The default is
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.Dq yes .
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If this options is set to
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.Dq without-password
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only password authentication is disabled for root.
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.Pp
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Root login with RSA authentication when the
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If this option is set to
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.Dq without-password
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password authentication is disabled for root.
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.Pp
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If this option is set to
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.Dq forced-commands-only
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root login with public key authentication will be allowed,
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but only if the
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.Ar command
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option has been
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specified will be allowed regardless of the value of this setting
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option has been specified
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(which may be useful for taking remote backups even if root login is
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normally not allowed).
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normally not allowed). All other authentication methods are disabled
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for root.
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.It Cm PidFile
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Specifies the file that contains the process identifier of the
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.Nm
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