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From c82322be0012f8bf467d75681bd82322eba11145 Mon Sep 17 00:00:00 2001
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From: Andreas Schneider <asn@samba.org>
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Date: Tue, 9 Jul 2019 13:01:49 +0200
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Subject: [PATCH 020/187] s4:libnet: Use encode_rc4_passwd_buffer() in
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libnet_SetPassword_samr_handle_26()
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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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Reviewed-by: Andrew Bartlett <abartlet@samba.org>
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(cherry picked from commit 5afa402bb7ba11a8eefc6e14047eeec1f3327681)
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---
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source4/libnet/libnet_passwd.c | 47 ++++++++--------------------------
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1 file changed, 11 insertions(+), 36 deletions(-)
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diff --git a/source4/libnet/libnet_passwd.c b/source4/libnet/libnet_passwd.c
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index 97ce7f58ddf..0beea077bd0 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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@@ -23,6 +23,7 @@
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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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#include "lib/crypto/gnutls_helpers.h"
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#include <gnutls/gnutls.h>
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@@ -276,10 +277,6 @@ static NTSTATUS libnet_SetPassword_samr_handle_26(struct libnet_context *ctx, TA
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struct samr_SetUserInfo2 sui;
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union samr_UserInfo u_info;
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DATA_BLOB session_key;
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- DATA_BLOB confounded_session_key = data_blob_talloc(mem_ctx, NULL, 16);
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- uint8_t confounder[16];
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- gnutls_hash_hd_t hash_hnd = NULL;
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- int rc;
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if (r->samr_handle.in.info21) {
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return NT_STATUS_INVALID_PARAMETER_MIX;
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@@ -287,9 +284,8 @@ static NTSTATUS libnet_SetPassword_samr_handle_26(struct libnet_context *ctx, TA
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/* prepare samr_SetUserInfo2 level 26 */
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ZERO_STRUCT(u_info);
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- encode_pw_buffer(u_info.info26.password.data, r->samr_handle.in.newpassword, STR_UNICODE);
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u_info.info26.password_expired = 0;
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-
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+
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status = dcerpc_fetch_session_key(r->samr_handle.in.dcerpc_pipe, &session_key);
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if (!NT_STATUS_IS_OK(status)) {
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r->samr_handle.out.error_string = talloc_asprintf(mem_ctx,
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@@ -297,38 +293,18 @@ static NTSTATUS libnet_SetPassword_samr_handle_26(struct libnet_context *ctx, TA
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nt_errstr(status));
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return status;
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}
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-
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- generate_random_buffer((uint8_t *)confounder, 16);
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-
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- rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
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- if (rc < 0) {
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- status = gnutls_error_to_ntstatus(rc, NT_STATUS_HASH_NOT_SUPPORTED);
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- goto out;
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- }
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- rc = gnutls_hash(hash_hnd, confounder, 16);
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- if (rc < 0) {
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- gnutls_hash_deinit(hash_hnd, NULL);
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- status = gnutls_error_to_ntstatus(rc, NT_STATUS_HASH_NOT_SUPPORTED);
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- goto out;
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- }
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- rc = gnutls_hash(hash_hnd, session_key.data, session_key.length);
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- if (rc < 0) {
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- gnutls_hash_deinit(hash_hnd, NULL);
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- status = gnutls_error_to_ntstatus(rc, NT_STATUS_HASH_NOT_SUPPORTED);
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- goto out;
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+ status = encode_rc4_passwd_buffer(r->samr_handle.in.newpassword,
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+ &session_key,
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+ &u_info.info26.password);
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+ if (!NT_STATUS_IS_OK(status)) {
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+ r->samr_handle.out.error_string =
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+ talloc_asprintf(mem_ctx,
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+ "encode_rc4_passwd_buffer failed: %s",
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+ nt_errstr(status));
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+ return status;
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}
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- gnutls_hash_deinit(hash_hnd, confounded_session_key.data);
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-
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- arcfour_crypt_blob(u_info.info26.password.data, 516, &confounded_session_key);
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- ZERO_ARRAY_LEN(confounded_session_key.data,
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- confounded_session_key.length);
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- data_blob_free(&confounded_session_key);
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-
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- memcpy(&u_info.info26.password.data[516], confounder, 16);
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- ZERO_ARRAY(confounder);
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-
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sui.in.user_handle = r->samr_handle.in.user_handle;
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sui.in.info = &u_info;
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sui.in.level = 26;
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@@ -346,7 +322,6 @@ static NTSTATUS libnet_SetPassword_samr_handle_26(struct libnet_context *ctx, TA
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r->samr_handle.in.account_name, nt_errstr(status));
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}
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-out:
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return status;
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}
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--
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2.23.0
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