CVE:CVE-2008-1898
CNNVD:CNNVD-200804-314
Microsoft Works是微软在早期所发布的文件处理程序。 
Microsoft Works所带的ActiveX控件实现上存在漏洞，远程攻击者可能利用此漏洞控制用户系统。
Microsoft Works所提供的wkimgsrv.dll库没有安全地调用WKsPictureInterface方式：
00D473BD              PUSH EBP                                 ;
Begin of Set WksPictureInterface method
00D473BE        MOV EBP,ESP
00D473C0              SUB ESP,1C
00D473C3      MOV EAX,DWORD PTR SS:[EBP+C]   ;  Move paramater to EAX
00D473C6      PUSH ESI
00D473C7     TEST EAX,EAX                             ;  Checking whether
EAX is NULL
00D473C9     JNZ SHORT wkimgsrv.00D473D5    ;  OK,if it is not null continue
00D473CB      MOV EAX,80004005            ;    
00D473D0      JMP wkimgsrv.00D47456               ;No,it's is NULL,exit method
00D473D5  ==>    MOV ESI,DWORD PTR SS:[EBP+8] ; Do some other stuffs, we don't care
00D473D8      LEA EDX,DWORD PTR SS:[EBP-1C] ;
00D473DB      PUSH EDX
00D473DC     PUSH EAX
00D473DD     MOV DWORD PTR DS:[ESI+2A0],EAX        ; =============
00D473E3   ==>    MOV ECX,DWORD PTR DS:[EAX]              ; Here is the
problem,the data stored by EAX is referenced and moved into ECX
00D473E5     CALL DWORD PTR DS:[ECX+30]               ;Next the address
in some struct pointed by ECX is called
如果能够在内存中创建第一个DWORD指向其本身且0x30偏移处的DWORD指向shellcode的结构，则当用户在访问恶意网页时就可能触发无效的内存访问，导致拒绝服务或执行任意指令。
solution:Upgrade microsoft office to a higher version than 2003,2007,and avoid the version 2003,2007; Upgrade microsoft works to a higher version than 7.0,and avoid the version 7.0