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git://anongit.mindrot.org/openssh.git
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a5103f413b
[auth1.c auth2-chall.c auth2-passwd.c authfile.c bufaux.c bufbn.c]
[buffer.c cipher-3des1.c cipher.c clientloop.c gss-serv.c kex.c]
[kexdhc.c kexdhs.c kexecdhc.c kexgexc.c kexecdhs.c kexgexs.c key.c]
[monitor.c monitor_wrap.c packet.c readpass.c rsa.c serverloop.c]
[ssh-add.c ssh-agent.c ssh-dss.c ssh-ecdsa.c ssh-ed25519.c]
[ssh-keygen.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c]
[sshd.c]
convert memset of potentially-private data to explicit_bzero()
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/* $OpenBSD: auth2-passwd.c,v 1.11 2014/02/02 03:44:31 djm Exp $ */
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/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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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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#include "includes.h"
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#include <sys/types.h>
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#include <string.h>
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#include <stdarg.h>
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#include "xmalloc.h"
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#include "packet.h"
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#include "log.h"
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#include "key.h"
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#include "hostfile.h"
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#include "auth.h"
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#include "buffer.h"
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#ifdef GSSAPI
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#include "ssh-gss.h"
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#endif
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#include "monitor_wrap.h"
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#include "servconf.h"
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/* import */
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extern ServerOptions options;
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static int
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userauth_passwd(Authctxt *authctxt)
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{
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char *password, *newpass;
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int authenticated = 0;
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int change;
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u_int len, newlen;
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change = packet_get_char();
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password = packet_get_string(&len);
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if (change) {
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/* discard new password from packet */
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newpass = packet_get_string(&newlen);
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explicit_bzero(newpass, newlen);
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free(newpass);
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}
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packet_check_eom();
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if (change)
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logit("password change not supported");
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else if (PRIVSEP(auth_password(authctxt, password)) == 1)
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authenticated = 1;
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explicit_bzero(password, len);
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free(password);
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return authenticated;
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}
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Authmethod method_passwd = {
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"password",
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userauth_passwd,
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&options.password_authentication
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};
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