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From 01c0b0ac77baae946d270d44d1c40dbdf17a8ee3 Mon Sep 17 00:00:00 2001
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From: Andreas Schneider <asn@samba.org>
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Date: Thu, 25 Jul 2019 15:15:46 +1200
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Subject: [PATCH 024/187] s4:libnet: Use GnuTLS RC4 in
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libnet_ChangePassword_samr()
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BUG: https://bugzilla.samba.org/show_bug.cgi?id=14031
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Signed-off-by: Andreas Schneider <asn@samba.org>
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Signed-off-by: Andrew Bartlett <abartlet@samba.org>
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Reviewed-by: Andrew Bartlett <abartlet@samba.org>
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(cherry picked from commit 9ea736590d9b22a7518f86b18e8c55b0d0e213d5)
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---
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source4/libnet/libnet_passwd.c | 110 +++++++++++++++++++++++++++++++--
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1 file changed, 104 insertions(+), 6 deletions(-)
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diff --git a/source4/libnet/libnet_passwd.c b/source4/libnet/libnet_passwd.c
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index dce3813de38..704a94a5864 100644
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--- a/source4/libnet/libnet_passwd.c
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+++ b/source4/libnet/libnet_passwd.c
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@@ -20,7 +20,6 @@
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#include "includes.h"
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#include "libnet/libnet.h"
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-#include "../lib/crypto/crypto.h"
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#include "libcli/auth/libcli_auth.h"
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#include "librpc/gen_ndr/ndr_samr_c.h"
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#include "source4/librpc/rpc/dcerpc.h"
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@@ -57,6 +56,16 @@ static NTSTATUS libnet_ChangePassword_samr(struct libnet_context *ctx, TALLOC_CT
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uint8_t old_lm_hash[16], new_lm_hash[16];
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struct samr_DomInfo1 *dominfo = NULL;
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struct userPwdChangeFailureInformation *reject = NULL;
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+ gnutls_cipher_hd_t cipher_hnd = NULL;
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+ gnutls_datum_t nt_session_key = {
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+ .data = old_nt_hash,
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+ .size = sizeof(old_nt_hash),
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+ };
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+ gnutls_datum_t lm_session_key = {
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+ .data = old_lm_hash,
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+ .size = sizeof(old_lm_hash),
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+ };
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+ int rc;
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ZERO_STRUCT(c);
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@@ -87,11 +96,47 @@ static NTSTATUS libnet_ChangePassword_samr(struct libnet_context *ctx, TALLOC_CT
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/* prepare samr_ChangePasswordUser3 */
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encode_pw_buffer(lm_pass.data, r->samr.in.newpassword, STR_UNICODE);
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- arcfour_crypt(lm_pass.data, old_nt_hash, 516);
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+
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+ rc = gnutls_cipher_init(&cipher_hnd,
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+ GNUTLS_CIPHER_ARCFOUR_128,
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+ &nt_session_key,
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+ NULL);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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+ rc = gnutls_cipher_encrypt(cipher_hnd,
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+ lm_pass.data,
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+ 516);
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+ gnutls_cipher_deinit(cipher_hnd);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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E_old_pw_hash(new_lm_hash, old_lm_hash, lm_verifier.hash);
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encode_pw_buffer(nt_pass.data, r->samr.in.newpassword, STR_UNICODE);
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- arcfour_crypt(nt_pass.data, old_nt_hash, 516);
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+
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+ rc = gnutls_cipher_init(&cipher_hnd,
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+ GNUTLS_CIPHER_ARCFOUR_128,
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+ &nt_session_key,
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+ NULL);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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+ rc = gnutls_cipher_encrypt(cipher_hnd,
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+ nt_pass.data,
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+ 516);
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+ gnutls_cipher_deinit(cipher_hnd);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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E_old_pw_hash(new_nt_hash, old_nt_hash, nt_verifier.hash);
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pw3.in.server = &server;
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@@ -125,11 +170,46 @@ static NTSTATUS libnet_ChangePassword_samr(struct libnet_context *ctx, TALLOC_CT
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/* prepare samr_ChangePasswordUser2 */
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encode_pw_buffer(lm_pass.data, r->samr.in.newpassword, STR_ASCII|STR_TERMINATE);
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- arcfour_crypt(lm_pass.data, old_lm_hash, 516);
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+
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+ rc = gnutls_cipher_init(&cipher_hnd,
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+ GNUTLS_CIPHER_ARCFOUR_128,
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+ &lm_session_key,
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+ NULL);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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+ rc = gnutls_cipher_encrypt(cipher_hnd,
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+ lm_pass.data,
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+ 516);
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+ gnutls_cipher_deinit(cipher_hnd);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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E_old_pw_hash(new_lm_hash, old_lm_hash, lm_verifier.hash);
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encode_pw_buffer(nt_pass.data, r->samr.in.newpassword, STR_UNICODE);
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- arcfour_crypt(nt_pass.data, old_nt_hash, 516);
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+
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+ rc = gnutls_cipher_init(&cipher_hnd,
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+ GNUTLS_CIPHER_ARCFOUR_128,
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+ &nt_session_key,
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+ NULL);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+ rc = gnutls_cipher_encrypt(cipher_hnd,
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+ nt_pass.data,
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+ 516);
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+ gnutls_cipher_deinit(cipher_hnd);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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E_old_pw_hash(new_nt_hash, old_nt_hash, nt_verifier.hash);
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pw2.in.server = &server;
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@@ -161,7 +241,25 @@ static NTSTATUS libnet_ChangePassword_samr(struct libnet_context *ctx, TALLOC_CT
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a_account.string = r->samr.in.account_name;
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encode_pw_buffer(lm_pass.data, r->samr.in.newpassword, STR_ASCII);
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- arcfour_crypt(lm_pass.data, old_lm_hash, 516);
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+
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+ rc = gnutls_cipher_init(&cipher_hnd,
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+ GNUTLS_CIPHER_ARCFOUR_128,
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+ &lm_session_key,
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+ NULL);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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+ rc = gnutls_cipher_encrypt(cipher_hnd,
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+ lm_pass.data,
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+ 516);
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+ gnutls_cipher_deinit(cipher_hnd);
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+ if (rc < 0) {
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+ status = gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
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+ goto disconnect;
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+ }
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+
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E_old_pw_hash(new_lm_hash, old_lm_hash, lm_verifier.hash);
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oe2.in.server = &a_server;
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--
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2.23.0
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