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Category:   Application (Generic)  >   BMC Remedy Action Request System Vendors:   BMC Software
Remedy Action Request System Discloses Username Validity to Remote Users
SecurityTracker Alert ID:  1017515
SecurityTracker URL:  http://securitytracker.com/id/1017515
CVE Reference:   CVE-2007-0310   (Links to External Site)
Updated:  May 19 2008
Original Entry Date:  Jan 15 2007
Impact:   Disclosure of system information
Exploit Included:  Yes  
Version(s): 5.01.02 Patch 1267
Description:   A vulnerability was reported in Remedy Action Request System. A remote user can determine valid usernames on the target application.

The system discloses different login error messages depending on whether the supplied username exists or not. A remote user can exploit this to determine valid usernames.

The following type of response is provided for a username that does not exist:

ARERR [612] No such user is registered with this server
user: test, server: 10.10.10.11

The following type of response is provided for a username does not exist when the supplied password is invalid:

ARERR [329] Invalid password for an existing user
user: user, server: 10.10.10.11

The vendor has been notified, without response.

Davide Del Vecchio discovered this vulnerability.

The original advisory is available at:

http://www.alighieri.org/advisories/advisory-remedy50102.txt

Impact:   A remote user can determine valid usernames.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.remedy.com/ (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (Any)

Message History:   None.


 Source Message Contents

Date:  Mon, 15 Jan 2007 17:57:25 +0100
Subject:  Remedy Action Request System 5.01.02 - User Enumeration

=======================================================
 Remedy Action Request System User Enumeration
======================================================= 

Davide Del Vecchio Adv#11 

Discovered in: 08/01/2007 

Version affected: Remedy Action Request System 5.01.02 Patch 1267.
The same vulnerable code could be present in other versions. 

Reference: http://www.alighieri.org/advisories/advisory-remedy50102.txt 

Software description: 

 From BMC Software website:
 "Remedy Action Request System 5.01.02 provides a consolidated Service
 Process Management platform for automating and managing Service
 Management business processes."
 

The problem: 

 During user login phase, it is possible to enumerate existing users
 examining the error messages provided by the software. 

 Suppling a non-existing user the error message is: 


 ARERR [612] No such user is registered with this server
	user: test,  server: 10.10.10.11 

 Unable to successfully log in to any server. 


 Suppling an existing user the error message is: 


 ARERR [329] Invalid password for an existing user
	user: user,  server: 10.10.10.11 

 Unable to successfully log in to any server. 


Solution: 

 Vendor has been contacted 3 times with no answer. 


Credits: 

 Davide Del Vecchio would like to thank his family and all
 the people supporting him and his research.
 Support the rosewitch project. 


Disclaimer: 

 The information within this paper may change without notice. Use of this
 information constitutes acceptance for use in an AS IS condition.
 There are NO warranties with regard to this information. In no event shall
 the author be liable for any damages whatsoever arising out of or in
 connection with the use or spread of this information. Any use of this
 information is at the user's own risk.
 ^^^^^^^^ 

Please send suggestions, updates, and comments to:
Davide Del Vecchio "Dante Alighieri" - dante at alighieri dot org
http://www.alighieri.org ~ http://legaest.blogspot.com

 
 


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