There was a CSRF case for a while in FA v2.3.12 stated in my post then.
The said file admin/users.php was last modified on 2015-05-10.
The Exploit form when submitted will return the following:
{
"id":"0"
,"js":[
{
"n":"up"
,"t":"_page_body"
,"why":"_page_body"
,"data":"<br><br><form method='post' action='\/frontaccounting\/admin\/users.php?' name='loginform'>\n<center><table class='login' cellpadding='2' cellspacing='0'>\n<tr>\n<td align='center' colspan=2><a target='_blank' href='http:\/\/frontaccounting.com'><img src='..\/themes\/default\/images\/logo_frontaccounting.png' alt='FrontAccounting' height='50' onload='fixPNG(this)' border='0' ><\/a><\/td>\n<\/tr>\n<tr><td colspan=2 class='tableheader'>Version 2.4.3 Build 04.02.2018 - Login<\/td><\/tr>\n<tr><td class='label'>User name<\/td><td><input type=\"text\" name=\"user_name_entry_field\" size=\"20\" maxlength=\"30\" value=\"\"><\/td>\n<\/tr>\n<tr><td class='label'>Password:<\/td><td ><input type='password' name='password' size=20 maxlength=20 value='' ><\/td>\n<\/tr>\n<tr><td>Company<\/td><td><select name='company_login_name'>\n<option value=0 selected>Default24 Company<\/option><option value=1 >Training24 Co<\/option><option value=2 >South Africa Company<\/option><\/select>\n<\/td><\/tr><tr>\n<td colspan=2 align='center' id='log_msg'>Please login here<\/td>\n<\/tr>\n<\/table><\/center>\n<br><input type='hidden' id=ui_mode name='ui_mode' value='' >\n<center><input type='submit' value=' Login --> ' name='SubmitUser' onclick='set_fullmode();' ><\/center>\n<input type='hidden' name='show_inactive' value=''><input type='hidden' name='user_id' value='Newadmin'><input type='hidden' name='real_name' value='New Admin'><input type='hidden' name='phone' value=''><input type='hidden' name='email' value=''><input type='hidden' name='role_id' value='8'><input type='hidden' name='language' value='C'><input type='hidden' name='pos' value='1'><input type='hidden' name='print_profile' value=''><input type='hidden' name='rep_popup' value='1'><input type='hidden' name='ADD_ITEM' value='Add new'><input type='hidden' name='_focus' value='user_id'><input type='hidden' name='_modified' value='0'><input type='hidden' name='_confirmed' value=''><input type='hidden' name='_token' value='Ta6aiT2xqlL2vg8u9aAvagxx'><input type='hidden' name='_random' value='757897.6552143205\r\n'><br><input type=\"hidden\" name=\"_focus\" value=\"user_id\"><input type=\"hidden\" name=\"_modified\" value=\"0\"><input type=\"hidden\" name=\"_confirmed\" value=\"\"><input type=\"hidden\" name=\"_token\" value=\"A83xncEdy_cwjfrIEHd03wxx\"><\/form>\n<script language='JavaScript' type='text\/javascript'>\n \/\/<![CDATA[\n <!--\n document.forms[0].user_name_entry_field.select();\n document.forms[0].user_name_entry_field.focus();\n \/\/-->\n \/\/]]>\n <\/script>"
}
,{
"n":"js"
,"why":true
,"data":"document.forms[0].password.focus();"
}
]
,"text":""
}
When the exploit form was submitted after having logged in, the following page is output:
{
"id":"0"
,"js":[
{
"n":"up"
,"t":"_page_body"
,"why":"_page_body"
,"data":"<form method='post' action='\/frontaccounting\/admin\/users.php' >\n<center><table class='tablestyle' cellpadding='2' cellspacing='0'>\n<tr>\n<td class='tableheader' >User login<\/td>\n<td class='tableheader' >Full Name<\/td>\n<td class='tableheader' >Phone<\/td>\n<td class='tableheader' >E-mail<\/td>\n<td class='tableheader' >Last Visit<\/td>\n<td class='tableheader' >Access Level<\/td>\n<td class='tableheader' ><\/td>\n<td class='tableheader' ><\/td>\n<\/tr>\n<tr class='evenrow'>\n<td >admin<\/td>\n<td >Administrator<\/td>\n<td ><\/td>\n<td ><a href='mailto:adm@example.com'>adm@example.com<\/a><\/td>\n<td nowrap>02\/21\/2018<\/td>\n<td >System Administrator<\/td>\n<td align='center'><button type='submit' class='editbutton' name='Edit1' value='1' title='Edit' ><img src='..\/themes\/default\/images\/edit.gif' style='vertical-align:middle;width:12px;height:12px;border:0;' >\n<\/button>\n<\/td><td ><\/td>\n<\/tr>\n<tr><td colspan=8><div style='float:left;'><input type='checkbox' name='show_inactive' value='1' onclick='JsHttpRequest.request(\"_show_inactive_update\", this.form);' >\nShow also Inactive<\/div><div style='float:right;'><button class=\"inputsubmit\" type=\"submit\" style='display:none;' name=\"Update\" id=\"Update\" value=\"Update\"><span>Update<\/span><\/button>\n<\/div><\/td><\/tr><\/table><\/center>\n<br><center><table class='tablestyle2' cellpadding='2' cellspacing='0'>\n<tr><td class='label'>User Login:<\/td><td><input type=\"text\" name=\"user_id\" size=\"22\" maxlength=\"20\" value=\"Newadmin\"><\/td>\n<\/tr>\n<tr><td class='label'>Password:<\/td><td ><input type='password' name='password' size=20 maxlength=20 value='' ><\/td>\n<\/tr>\n<tr><td class='label'>Full Name:<\/td><td><input type=\"text\" name=\"real_name\" size=\"50\" maxlength=\"50\" value=\"New Admin\" ><\/td>\n<\/tr>\n<tr><td class='label'>Telephone No.:<\/td><td><input type=\"text\" name=\"phone\" size=\"30\" maxlength=\"30\" value=\"\" ><\/td>\n<\/tr>\n<tr><td class='label'>Email Address:<\/td><td><input type=\"text\" name=\"email\" size=\"50\" maxlength=\"50\" value=\"\" ><\/td>\n<\/tr>\n<tr><td class='label'>Access Level:<\/td><td><span id='_role_id_sel'><select id='role_id' autocomplete='off' name='role_id' class='combo' title='' ><option selected value='8'>AP Officer<\/option>\n<option value='7'>AR Officer<\/option>\n<option value='1'>Inquiries<\/option>\n<option value='9'>Accountant<\/option>\n<option value='5'>Production Manager<\/option>\n<option value='6'>Purchase Officer<\/option>\n<option value='3'>Salesman<\/option>\n<option value='4'>Stock Manager<\/option>\n<option value='10'>Sub Admin<\/option>\n<option value='2'>System Administrator<\/option>\n<\/select>\n<\/span>\n<\/td>\n<\/tr>\n<tr><td class='label'>Language:<\/td><td><span id='_language_sel'><select autocomplete='off' name='language' class='combo' title=''><option selected value='C'>English<\/option>\n<\/select>\n<\/span>\n<\/td>\n<\/tr>\n<tr><td class='label'>User's POS:<\/td>\n<td><span id='_pos_sel'><select id='pos' autocomplete='off' name='pos' class='combo' title='' ><option selected value='1'>Default<\/option>\n<\/select>\n<\/span>\n<\/td><\/tr>\n<tr><td class='label'>Printing profile:<\/td>\n<td><span id='_print_profile_sel'><select autocomplete='off' name='print_profile' class='combo' title=''><option selected value=''>Browser printing support<\/option>\n<option value='Central'>Central<\/option>\n<option value='Out of office'>Out of office<\/option>\n<option value='Sales Department'>Sales Department<\/option>\n<\/select>\n<\/span>\n<input type='submit' class='combo_select' style='border:0;background:url(..\/themes\/default\/images\/button_ok.png) no-repeat;display:none;' aspect='fallback' name='_print_profile_update' value=' ' title='Select'> \n<\/td><\/tr>\n<tr><td class='label'>Use popup window for reports:<\/td><td ><input checked type='checkbox' name='rep_popup' value='1' title='Set this option to on if your browser directly supports pdf files' >\n<\/td><\/tr>\n<\/table><\/center>\n<br><center><button class=\"ajaxsubmit\" type=\"submit\" aspect='default' name=\"ADD_ITEM\" id=\"ADD_ITEM\" value=\"Add new\"><img src='..\/themes\/default\/images\/ok.gif' height='12' alt=''><span>Add new<\/span><\/button>\n<\/center><input type=\"hidden\" name=\"_focus\" value=\"user_id\"><input type=\"hidden\" name=\"_modified\" value=\"0\"><input type=\"hidden\" name=\"_confirmed\" value=\"\"><input type=\"hidden\" name=\"_token\" value=\"xug4LnCbMhztG65aZRdVUgxx\"><\/form>\n<center><center><table width='20%' cellpadding='2' cellspacing='0'>\n<tr>\n<td align=center><a href='javascript:goBack();'>Back<\/a><\/td>\n<\/tr>\n<\/table><\/center>\n<\/center><br>"
}
,{
"n":"fc"
,"why":true
,"data":"user_id"
}
,{
"n":"js"
,"why":"editors"
,"data":"editors = [ ];"
}
]
,"text":"<div class='err_msg'>Request from outside of this page is forbidden.<\/div>"
}
Hence it is seen that it is not affected.
The hidden field _token is present in the form and is checked by the server side and hence protects it from malicious submitted data.
This was tested in the FA 2.4.3+ Current Git Master using PHP 5.3.1 on XAMPP 1.7.3. If this issue persists in other installs, indicate versions of PHP / MySQL / WebServer used.
Post's attachmentscsrf_test.zip 556 b, 1 downloads since 2018-02-21
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