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UNIRAS Brief - 118/04 - Two Sun Microsystems Security Advisories



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 118/04 dated 12.03.04  Time: 13:35
  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Two Sun Microsystems Security Advisories:

1. ASN.1 Parsing Issue May Lead to Denial-of-Service Condition in Sun Java
   System Web Server and Sun Java System Application Server.

2. Multiple Buffer Overflows in "/usr/bin/uucp" May Allow Unauthorized
   uucp(1C) User ID Access.



Detail
====== 

1. An issue in ASN.1 parsing may be exploited by a local or remote unprivileged user
to create a Denial-Of-Service condition in the Sun Java System Web Server and Sun 
Java System Application Server.

2. Local unprivileged users may be able to gain unauthorized uucp(1C)user ID access 
due to multiple buffer overflows in the uucp binary. Users with uucp(1C) user ID access
may subsequently gain unauthorized "root" user access rights.
   




1.

     ESB-2004.0200 -- Sun(sm) Alert Notification - Sun Alert ID: 57498
  ASN.1 Parsing Issue May Lead to Denial-of-Service Condition in Sun Java
         System Web Server and Sun Java System Application Server
                               11 March 2004


Product:                Sun Java System Web Server
                        Sun Java System Application Server
Publisher:              Sun Microsystems
Operating System:       Solaris 8 and 9
                        Red Hat Enterprise Linux AS 2.1
                        HP-UX
                        AIX
                        Windows 2000 and XP
Impact:                 Denial of Service
Access Required:        Remote

Ref:                    AL-2003.18

- - --------------------------BEGIN INCLUDED TEXT--------------------

   DOCUMENT ID: 57498
   SYNOPSIS: ASN.1 Parsing Issue May Lead to Denial-of-Service Condition
   in Sun Java System Web Server and Sun Java System Application Server
   DETAIL DESCRIPTION:
   
Sun(sm) Alert Notification

     * Sun Alert ID: 57498
     * Synopsis: ASN.1 Parsing Issue May Lead to Denial-of-Service
       Condition in Sun Java System Web Server and Sun Java System
       Application Server
     * Category: Security
     * Product: Sun Java System Web Server, Sun Java System Application
       Server
     * BugIDs: 4945089
     * Avoidance: Upgrade
     * State: Resolved
     * Date Released: 04-Mar-2004
     * Date Closed: 04-Mar-2004
     * Date Modified:
       
1. Impact

   An issue in ASN.1 parsing may be exploited by a local or remote
   unprivileged user to create a Denial-Of-Service condition in the Sun
   Java System Web Server and Sun Java System Application Server.
   
   This issue is also described in CERT Vulnerability VU#104280 at
   [1]http://www.kb.cert.org/vuls/id/104280, which is referenced in CERT
   Advisory CA-2003-26 at
   [2]http://www.cert.org/advisories/CA-2003-26.html. Also see the NISCC
   Vulnerability Advisory 006489/TLS at
   [3]http://www.uniras.gov.uk/vuls/2003/006489/tls.htm.
   
2. Contributing Factors

   This issue can occur in the following releases on all platforms:
     * Sun Java System Web Server 4.1, Enterprise Edition, Service Pack
       13 and earlier
     * Sun Java System Web Server 6.0 Service Pack 6 and earlier
     * Sun Java System Web Server 6.1
     * Sun Java System Application Server 7, Standard Edition Update 2
       and earlier
     * Sun Java System Application Server 7, Platform Edition Update 2
       and earlier
       
   Note: Releases prior to Sun Java System Application Server 7 are not
   affected.
   
   For supported architectures and OS versions see:
   
   Sun Java System Web Server 4.1, Enterprise Edition, Service Pack 13 at
   [4]http://wwws.sun.com/software/download/products/3f8472da.html
   
   Sun Java System Web Server 6.0 Service Pack 6 at
   [5]http://wwws.sun.com/software/download/products/3f186391.html
   
   Sun Java System Web Server 6.1 at
   [6]http://wwws.sun.com/software/download/products/3f4f998d.html
   
   Sun Java System Application Server 7, Standard Edition Update 2 at
   [7]http://wwws.sun.com/software/download/products/3f7df408.html
   
   Sun Java System Application Server 7, Platform Edition Update 2 at
   [8]http://wwws.sun.com/software/download/products/3fb01655.html
   
3. Symptoms

   The Application Server or Web Server may restart unexpectedly.
   SOLUTION SUMMARY:
   
4. Relief/Workaround

   There is no workaround. Please see the Resolution section.
   
5. Resolution

   This issue is addressed in the following releases:
     * Sun Java System Web Server 4.1, Enterprise Edition, Service Pack
       14 (final release)
     * Sun Java System Web Server 6.0 Service Pack 7 and later
     * Sun Java System Web Server 6.1 Service Pack 1 and later
     * Sun Java System Application Server 7, Update 2 Upgrade and later
       
   Sun Java System Application Server releases are available at
   [9]http://wwws.sun.com/software/download/app_servers.html.
   
   Sun Java System Web Server releases are available at
   [10]http://wwws.sun.com/software/download/inter_ecom.html#webs.
   
   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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.
   

References

   1. http://www.kb.cert.org/vuls/id/104280
   2. http://www.cert.org/advisories/CA-2003-26.html
   3. http://www.uniras.gov.uk/vuls/2003/006489/tls.htm
   4. http://wwws.sun.com/software/download/products/3f8472da.html
   5. http://wwws.sun.com/software/download/products/3f186391.html
   6. http://wwws.sun.com/software/download/products/3f4f998d.html
   7. http://wwws.sun.com/software/download/products/3f7df408.html
   8. http://wwws.sun.com/software/download/products/3fb01655.html
   9. http://wwws.sun.com/software/download/app_servers.html
  10. http://wwws.sun.com/software/download/inter_ecom.html#webs









2.


     ESB-2004.0201 -- Sun(sm) Alert Notification - Sun Alert ID: 57508
    Multiple Buffer Overflows in "/usr/bin/uucp" May Allow Unauthorized
                          uucp(1C) User ID Access
                               11 March 2004


Product:                uucp(1C)
Publisher:              Sun Microsystems
Operating System:       Solaris 9
                        Solaris 8
                        Solaris 7
                        Solaris 2.6
Impact:                 Root Compromise
Access Required:        Existing Account

- - --------------------------BEGIN INCLUDED TEXT--------------------

   DOCUMENT ID: 57508
   SYNOPSIS: Multiple Buffer Overflows in "/usr/bin/uucp" May Allow
   Unauthorized uucp(1C) User ID Access
   DETAIL DESCRIPTION:
   
Sun(sm) Alert Notification

     * Sun Alert ID: 57508
     * Synopsis: Multiple Buffer Overflows in "/usr/bin/uucp" May Allow
       Unauthorized uucp(1C) User ID Access
     * Category: Security
     * Product: Solaris
     * BugIDs: 4804089, 4756979
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 04-Mar-2004
     * Date Closed: 04-Mar-2004
     * Date Modified:
       
1. Impact

   Local unprivileged users may be able to gain unauthorized uucp(1C)
   user ID access due to multiple buffer overflows in the uucp binary.
   Users with uucp(1C) user ID access may subsequently gain unauthorized
   "root" user access rights.
   
2. Contributing Factors

   This issue can occur in the following releases:
   
   SPARC Platform
     * Solaris 2.6 without patch 106468-06
     * Solaris 7 without patch 106952-04
     * Solaris 8 without patch 111570-03
     * Solaris 9 without patch 113322-02
       
   x86 Platform
     * Solaris 2.6 without patch 106469-06
     * Solaris 7 without patch 106953-04
     * Solaris 8 without patch 111571-03
     * Solaris 9 without patch 115880-01
       
3. Symptoms

   There are no symptoms that would indicate the described issue has been
   exploited to gain unauthorized uucp(1C) or root user ID access to a
   system.
   SOLUTION SUMMARY:
   
4. Relief/Workaround

   To work around the described issue, remove the set-user-ID bit from
   the uucp binary by issuing the following command:
    # chmod u-s /usr/bin/uucp                              

   Note: Removing the set-user-ID bit from the uucp binary will prevent
   unprivileged users from using the "uucp" command to access calling
   devices (i.e. modems).
   
   Another option is to set "noexec_user_stack" options to defeat the
   most common form of buffer overflow attacks that store executable
   exploit code on the stack. This can be achieved by editing the
   "/etc/system" file and adding the lines:
    set noexec_user_stack = 1
    set noexec_user_stack_log = 1                  

   Note: A reboot will be necessary in order for the "/etc/system" change
   to take effect.
   
5. Resolution

   This issue is addressed in the following releases:
   
   SPARC Platform
     * Solaris 2.6 with patch 106468-06 or later
     * Solaris 7 with patch 106952-04 or later
     * Solaris 8 with patch 111570-03 or later
     * Solaris 9 with patch 113322-02 or later
       
   x86 Platform
     * Solaris 2.6 with patch 106469-06 or later
     * Solaris 7 with patch 106953-04 or later
     * Solaris 8 with patch 111571-03 or later
     * Solaris 9 with patch 115880-01 or later
       
   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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.
   





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UNIRAS wishes to acknowledge the contributions of Sun Microsystems for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
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members and the community at large. 
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<End of UNIRAS Briefing>

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