Zabbix 2.2.x, 3.0.x SQL注射漏洞修复方法

1.漏洞测试

在您的zabbix的地址后面加上如下url：

jsrpc.php?type=&method=screen.get&timestamp=&pageFile=history.php&profileIdx=web.item.graph&profileIdx=+or+updatexml(,md5(0x11),)+or+=)%&updateProfile=true&period=&stime=&resourcetype=

我的地址如下：

http://10.192.1168.153/zabbix/jsrpc.php?type=9&method=screen.get&timestamp=1471403798083&pageFile=history.php&profileIdx=web.item.graph&profileIdx2=1+or+updatexml(1,md5(0x11),1)+or+1=1)%23&updateProfile=true&period=3600&stime=20160817050632&resourcetype=17

输出结果，如下表示漏洞存在：

<div class="flickerfreescreen" id="flickerfreescreen_1" data-timestamp="" style="position: relative;"></div><table class="msgerr" cellpadding="" cellspacing="" id="msg_messages" style="width: 100%;"><tr><td class="msg" colspan=""><ul class="messages"><li class="error">reset() expects parameter  to be array, null given [jsrpc.php: &rarr; CScreenHistory-&gt;get() &rarr; reset() in /var/www/html/zabbix/include/classes/screens/CScreenHistory.php:]</li><li class="error">Error in query [INSERT INTO profiles (profileid, userid, idx, value_int, type, idx2) VALUES (, , 'web.item.graph.period', '', ,  or updatexml(,md5(0x11),) or =)#)] [XPATH syntax error: 'ed733b8d10be225eceba344d533586']</li><li class="error">Error in query [INSERT INTO profiles (profileid, userid, idx, value_str, type, idx2) VALUES (, , 'web.item.graph.stime', '', ,  or updatexml(,md5(0x11),) or =)#)] [XPATH syntax error: 'ed733b8d10be225eceba344d533586']</li><li class="error">Error in query [INSERT INTO profiles (profileid, userid, idx, value_int, type, idx2) VALUES (, , 'web.item.graph.isnow', '', ,  or updatexml(,md5(0x11),) or =)#)] [XPATH syntax error: 'ed733b8d10be225eceba344d533586']</li></ul></td></tr></table>

2.修复方案

1).升级包链接地址[https://support.zabbix.com/browse/ZBX-11023](https://support.zabbix.com/browse/ZBX-11023)

2).暴力的修补方法是对CProfile类的flush方法中注入参数做强制整形转换即可 /var/www/html/zabbix/include/classes/user/CProfile.php:

 public static function flush() {
                $result = false;

                if (self::$profiles !== null && self::$userDetails['userid'] >  && self::isModified()) {
                        $result = true;

                        foreach (self::$insert as $idx => $profile) {
                                foreach ($profile as $idx2 => $data) {
                                        $result &= self::insertDB($idx, $data['value'], $data['type'],zbx_dbstr($idx2));
                                }
                        }

                        ksort(self::$update);
                        foreach (self::$update as $idx => $profile) {
                                ksort($profile);
                                foreach ($profile as $idx2 => $data) {
                                //这里用intval($idx2)或者zbx_dbstr($idx2)替换原来的$idx2
                                        $result &= self::updateDB($idx, $data['value'], $data['type'], zbx_dbstr($idx2));
                                }
                        }
                }

                return $result;
        }

修改后再用原漏洞测试Url,结果如下：

<div class="flickerfreescreen" id="flickerfreescreen_1" data-timestamp="" style="position: relative;"></div><table class="msgerr" cellpadding="" cellspacing="" id="msg_messages" style="width: 100%;"><tr><td class="msg" colspan=""><ul class="messages"><li class="error">reset() expects parameter  to be array, null given [jsrpc.php: &rarr; CScreenHistory-&gt;get() &rarr; reset() in /var/www/html/zabbix/include/classes/screens/CScreenHistory.php:]</li></ul></td></tr></table>

参考文档：

http://www.cnbraid.com/2016/08/18/zabbix303/

http://www.oschina.net/news/76236/zabbix-sql

http://seclists.org/fulldisclosure/2016/Aug/60

http://seclists.org/fulldisclosure/2016/Aug/79