[Full-Disclosure] LNSA-#2004-0011: CVS Server and Client Vulnerabilities

From: Vincenzo Ciaglia (ciaglia_at_netwosix.org)
Date: 04/18/04

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    To: announce@netwosix.org
    Date: Sun, 18 Apr 2004 16:50:23 +0200

    Hash: SHA1

    Netwosix Linux Security Advisory #2004-0011 <http://www.netwosix.org>
    - -----------------------------------------------------------------------------------

    Package name:    cvs
    Summary:          client and server vulnerabilities
    Date:               2004-04-18
    Affected versions: Netwosix 1.0
                         Netwosix 1.1

    - - -> Package description:
    - - ------------------------
    CVS is the Concurrent Versions System, the dominant open-source
    network-transparent version control system. CVS is useful for everyone from
    individual developers to large, distributed teams:

        * Its client-server access method lets developers access the latest code
    from anywhere there's an Internet connection.
        * Its unreserved check-out model to version control avoids artificial
    conflicts common with the exclusive check-out model.
        * Its client tools are available on most platforms.

    - - -> Problem description:
    - - ------------------------


    * Piped checkouts of paths above $CVSROOT no longer work. Previously, clients
      could have requested the contents of RCS archive files anywhere on a CVS


    * Clients now check paths from the server to verify that they are within one
    of the sandboxes the user requested be updated. Previously, a trojan server
      could have written or overwritten files anywhere the user had access,
      presenting a serious security risk.

    - - -> Action:
    - - ------------------------
      We recommend that all systems with this package installed be upgraded.
      Please note that if you do not need the functionality provided by this
      package, you may want to remove it from your system.

    - - -> Location:
    - - ---------------------

      You can download the latest version of this package in NEPOTE format from:

    - - -> Nepote Update:
    - - ---------------------

    See this instructions to update the port of this package:

            # wget http://www.netwosix.org/0011/nepote
            # sh nepote (to install the new and updated package)

    - - -> References
    - - ---------------------

            Specific references for this advisory:

    - - -> About Linux Netwosix:
    - - ---------------------------------
    Linux Netwosix is a powerful and optimized Linux distribution for servers
    and Network Security related jobs.  It can also be used for special operations
    such as penetration testing with its big collection of security oriented
    software and sources. It's a light distribution created for the requirements
    of every SysAdmin and it's very portable and highly configurable. Our
    philosophy is to give greater liberty for  configuration to the SysAdmin.
    Only in this way can he/she configure a powerful and stable server machine.
    Linux Netwosix also has a powerful ports system (Nepote) similar to the xBSD
    systems but more flexible and usable.

    - - -> Questions?
    - - ---------------------
      Check out our mailing lists:

      The advisory itself is available at
    - - --------------------------------------------------

    MD5sums of the packages:
    - - - --------------------------------------------------------------------------
    ae866e2b76bb6322846679019209247d  0011/nepote
    63873ed6ae942b298cf1db15c85ea22e 0011/cvs-1.11.15.tar.bz2
    - - - --------------------------------------------------------------------------
    - --
    Vincenzo Ciaglia
    Linux Netwosix Team - [ Keyid: 0x6BB3E24A]
    Key fingerprint = 4B3E A25F 2A7A 0C19 1A97 616B EA3C FDA4 6BB3 E24A

    Version: GnuPG v1.2.4 (GNU/Linux)

    -----END PGP SIGNATURE-----

    Full-Disclosure - We believe in it.
    Charter: http://lists.netsys.com/full-disclosure-charter.html

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