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             AUSCERT External Security Bulletin Redistribution

                        ESB-2006.0362 -- [Solaris]
        Security Vulnerability in the Solaris 9 in.ftpd(1M) Server
                  May Allow Unauthorized Directory Access
                                29 May 2006

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              ftpd
Publisher:            Sun Microsystems
Operating System:     Solaris 9
Impact:               Inappropriate Access
Access:               Remote/Unauthenticated
CVE Names:            CAN-2004-0148

Ref:                  ESB-2004.0188

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102356-1

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Sun(sm) Alert Notification
     * Sun Alert ID: 102356
     * Synopsis: Security Vulnerability in the Solaris 9 in.ftpd(1M)
       Server May Allow Unauthorized Directory Access
     * Category: Security
     * Product: Solaris 9 Operating System
     * BugIDs: 5012436
     * Avoidance: Workaround
     * State: Workaround
     * Date Released: 18-May-2006
     * Date Closed: 
     * Date Modified: 

1. Impact

   A security vulnerability in the Solaris 9 in.ftpd(1M) server may allow
   local or remote unprivileged users to access directories outside of
   their home directory or to log in with their $HOME directory set to
   "/" (slash).

   This issue is also described in CAN-2004-0148 at
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0148

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 9

   x86 Platform
     * Solaris 9

   Notes:
    1. Solaris 8 and Solaris 10 are not affected by this issue.
    2. This issue only affects systems configured as FTP servers with
       either the 'restricted-uid' or 'restricted-gid' clause in the
       ftpaccess(4) file.

   To determine if the in.ftpd service is enabled on a system the
   following command can be used:
    $ ftp remote-host
    Connected to remote-host.domain.com.
    220 remote-host FTP server ready.
    Name (remote-host:username):

3. Symptoms

   There are no predictable symptoms that would indicate the described
   issue has been exploited. 

4. Relief/Workaround

   To work around the described issue until patches can be applied,
   disable the in.ftpd(1M) daemon with the following steps:

   1. Edit the "/etc/inetd.conf" file and comment out the following line
   by prepending the "#" symbol, as in the following example:
    #ftp stream tcp6 nowait root /usr/sbin/in.ftpd in.ftpd

   2. Send the inetd(1M) process a hangup signal (SIGHUP) to that inetd
   will reread the inetd.conf configuration file:
    # pkill -HUP inetd

   This will disable in.ftpd(1M).

5. Resolution

   A final resolution is pending completion.

   This Sun Alert notification is being provided to you on an "AS IS"
   basis. This Sun Alert notification may contain information provided by
   third parties. The issues described in this Sun Alert notification may
   or may not impact your system(s). Sun makes no representations,
   warranties, or guarantees as to the information contained herein. ANY
   AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
   information. It is being provided to you pursuant to the provisions of
   your agreement to purchase services from Sun, or, if you do not have
   such an agreement, the Sun.com Terms of Use. This Sun Alert
   notification may only be used for the purposes contemplated by these
   agreements.

   Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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===========================================================================
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