S21SEC-020 - Vignette user enumeration

From: S21SEC (vul-serv_at_s21sec.com)
Date: 05/26/03

  • Next message: S21SEC: "S21SEC-024 - Vignette TCL Injection" 
    Date: Mon, 26 May 2003 16:11:46 +0200
To: bugtraq@securityfocus.com

    ###############################################################
    ID: S21SEC-020-en
    Title: Vignette user enumeration
    Date: 15/03/2003
    Status: Vendor contacted and solution available
    Scope: Enumeration of user status
    Platforms: All
    Author: rpinuaga
    Location: http://www.s21sec.com/es/avisos/s21sec-020-en.txt
    Release: External
    ###############################################################

                                    S 2 1 S E C

                               http://www.s21sec.com

                             Vignette user enumeration

    About Vignette
    --------------

    Vignette develops Content Management and Application Portal Software.

    Description of vulnerability
    ----------------------------

    The default login template, commonly located at /vgn/login, used in Vignette for user authentication, permits external attackers to enumerate valid accounts names on the system.

    The response given by this template, varies if the user exists, if the user doesn't exists or if the account is disabled.

    This leads to know the status of each username and to launch brute force attacks to obtain the list of the valid user accounts.

    Affected Versions and platforms
    -------------------------------

    This vulnerability has been tested in Vignette StoryServer 5 and Vignette V/5. But it seems that all currently avaliable versions are vulnerable.

    Solution
    --------

    Modify the /vgn/login template to avoid the explicit error messages for authentication.
    Vignette users should procceed to contact vignette throught the standard channels VOLS etc in order to get a solution.

    Additional information
    ----------------------

    These vulnerabilities have been found and researched by:

     Ramon Pinuaga Cascales rpinuaga@s21sec.com

    You can find the last version of this warning in:

            http://www.s21sec.com/es/avisos/s21sec-020-en.txt

    And other S21SEC warnings in http://www.s21sec.com/es/avisos/

  • Next message: S21SEC: "S21SEC-024 - Vignette TCL Injection"

    Relevant Pages

    • S21SEC-018 - Vignette memory leak AIX Platform
      ... Vignette memory leak AIX Platform ... Affected Versions and platforms ... This vulnerability has been tested in Vignette StoryServer and Vignette V/5. ...
      (Bugtraq)
    • S21SEC-019 - Vignette /vgn/style internal information leak
      ... Vignette /vgn/style internal information leak ... Affected Versions and platforms ... This vulnerability has been tested in Vignette StoryServer and Vignette V/5. ...
      (Bugtraq)
    • [NEWS] Vignette Story Server Sensitive Information Disclosure
      ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... Vignette Story Server allows the publication of both static and dynamic ... exists vulnerability within the TCL interpreter used that allows 'dumping' ... @stake calls Vignette contact to explain vulnerability, ...
      (Securiteam)
    • [NEWS] Vignette Server SSI Injection
      ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... A vulnerability in the Vignette server allows ...
      (Securiteam)
    • S21SEC-024 - Vignette TCL Injection
      ... Title: Vignette TCL Injection ... Vignette Software presents a vulnerability in some propietary commands that permits the injection of TCL code under some circunstances. ... the value of some unfiltered variables is used and evaluated with the SHOW command. ...
      (Bugtraq)