安全研究
安全漏洞
LokiCMS admin.php文件绕过安全限制漏洞
发布日期:2008-05-31
更新日期:2008-06-02
受影响系统:
LokiCMS LokiCMS 0.3.4描述:
BUGTRAQ ID: 29448
LokiCMS是一款简单易用的网络内容管理系统。
LokiCMS的admin.php文件中存在逻辑错误,如果远程攻击者在所提交的HTTP POST请求中设置了LokiACTION和其他参数的话,则无需管理权限就可以设置CMS main settings。
以下是有漏洞的代码段:
# admin.php Lines:24-42
if ( isset ( $_POST ) && isset ( $_POST['LokiACTION'] ) && strlen ( trim ( $_POST['LokiACTION'] )
) > 0 ) {
// we have an action to do
switch ( trim ( $_POST['LokiACTION'] ) ) {
case 'A_LOGOUT': // Logout
unset($_SESSION[PATH]);
break;
case 'A_LOGIN': // Login
if ( isset ( $_POST['login'] ) && sha1 ( $_POST['login'] ) == $c_password )
$_SESSION[PATH] = 'logged in lokicms030';
break;
case 'A_SAVE_G_SETTINGS': //save main settings
writeconfig ( $c_password, $_POST['title'], $_POST['header'], $_POST['tagline'],
$_POST['footnote'], $c_default, $_POST['theme'], $_POST['language'], $_POST['modrewrite'],
$_POST['simplelink'], $_POST['code'] );
$c_theme = $_POST['theme'];
include PATH . '/includes/Config.php';
include PATH . '/languages/' . $c_lang . '.lang.php';
$msg = $lang ['admin'] ['expressionSettingsSaved'];
break;
# includes/Functions.php Lines:163-200
function writeconfig ( $c_password, $c_title, $c_header, $c_tagline, $c_footnote, $c_default,
$c_theme, $c_lang, $c_modrewrite, $c_simplelink, $c_code )
{
.
.
.
$config = '<?php ' . LINEBREAK;
$config .= '// LokiCMS Config file, You can change settings in this file or via admin.php ' .
LINEBREAK;
$config .= '$c_password = \'' . $c_password . '\'; ' . LINEBREAK;
$config .= '$c_title = \'' . $c_title . '\'; ' . LINEBREAK;
$config .= '$c_header = \'' . $c_header . '\'; ' . LINEBREAK;
$config .= '$c_tagline = \'' . $c_tagline . '\'; ' . LINEBREAK;
$config .= '$c_footnote = \'' . $c_footnote . '\'; ' . LINEBREAK;
$config .= '$c_default = \'' . $c_default . '\'; ' . LINEBREAK;
$config .= '$c_theme = \'' . $c_theme . '\'; ' . LINEBREAK;
$config .= '$c_lang = \'' . $c_lang . '\'; ' . LINEBREAK;
$config .= '$c_modrewrite = ' . $c_modrewrite . '; ' . LINEBREAK;
$config .= '$c_simplelink = ' . $c_simplelink . '; ' . LINEBREAK;
$config .= '$c_code = ' . $c_code . '; ' . LINEBREAK;
$config .= '?>';
$handle = fopen ( 'includes/Config.php', 'w' );
fwrite ( $handle, $config );
fclose ( $handle );
}
<*来源:alireza hassani
链接:http://marc.info/?l=bugtraq&m=121225339718904&w=2
http://secunia.com/advisories/30472/
*>
建议:
厂商补丁:
LokiCMS
-------
目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商的主页以获取最新版本:
http://www.lokicms.com/
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