TUCoPS :: SunOS/Solaris :: n-131.txt

Sun Solaris Runtime Linker ld so 1 Vulnerability (CIAC N-131)

             __________________________________________________________

                       The U.S. Department of Energy
                   Computer Incident Advisory Capability
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                             INFORMATION BULLETIN

              Sun Solaris Runtime Linker ld.so.1(1) Vulnerability
                             [Sun Alert ID: 55680]

July 30, 2003 16:00 GMT                                           Number N-131
______________________________________________________________________________
PROBLEM:       A buffer overflow vulnerability has been identified in the 
               runtime linker ld.so.1(1). The runtime linker ld.so.1(1) 
               processes dynamic executables and shared objects at runtime, 
               binding them to create a runnable process. 
PLATFORM:      Solaris 2.6, 7, 8, and 9 
DAMAGE:        Local attackers could gain root access. 
SOLUTION:      Apply appropriate patches. 
______________________________________________________________________________
VULNERABILITY  The risk is MEDIUM. A local attacker could exploit this 
ASSESSMENT:    vulnerability if at least one setuid root dynamically linked 
               program exists on the system. This is the case on virtually all 
               default implementations of Solaris 8 and 9. 
______________________________________________________________________________
LINKS: 
 CIAC BULLETIN:      http://www.ciac.org/ciac/bulletins/n-131.shtml 
 ORIGINAL BULLETIN:                                                           
                     http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=
                         fsalert%2F55680&zone_32=category%3Asecurity 
______________________________________________________________________________
[***** Start Sun Alert ID: 55680 *****]

Sun(sm) Alert Notification 

Sun Alert ID: 55680 
Synopsis: Security Vulnerability in the Solaris Runtime Linker ld.so.1(1) 
Category: Security 
Product: Solaris 
BugIDs: 4872634 
Avoidance: Patch 
State: Resolved 
Date Released: 29-Jul-2003 
Date Closed: 29-Jul-2003 
Date Modified: 

1. Impact 

An unprivileged local user may be able to gain unauthorized root 
privileges due to a buffer overflow in the runtime linker ld.so.1(1). 

Sun acknowledges with thanks, Jouko Pynnönen (jouko@iki.fi) for bringing 
this issue to our attention and iDEFENSE Inc. (www.idefense.com) for 
coordinating the release of this issue. 

This issue is described in iDEFENSE Advisory located at: 
http://www.idefense.com/advisory/07.29.03.txt. 

2. Contributing Factors 

This issue can occur in the following releases: 

SPARC Platform 

Solaris 2.6 with patch 107733-10 and without patch 107733-11 
Solaris 7 with patches 106950-14 through 106950-22 and without 
   patch 106950-23 
Solaris 8 with patches 109147-07 through 109147-24 and without 
   patch 109147-25 
Solaris 9 without patch 112963-09 

x86 Platform 

Solaris 2.6 with patch 107734-10 and without patch 107734-11 
Solaris 7 with patches 106951-14 through 106951-22 and without 
   patch 106951-23 
Solaris 8 with patches 109148-07 through 109148-24 and without 
   patch 109148-25 
Solaris 9 without patch 113986-05 

3. Symptoms 

There are no reliable symptoms that would show the described issue 
has been exploited. 

Solution Summary
                                                                                                      Top
4. Relief/Workaround 

There is no workaround. Please see the "Resolution" section below. 

5. Resolution 

This issue is addressed in the following releases: 

SPARC Platform 

Solaris 2.6 with patch 107733-11 or later 
Solaris 7 with patch 106950-23 or later 
Solaris 8 with patch 109147-25 or later 
Solaris 9 with patch 112963-09 or later 

x86 Platform 

Solaris 2.6 with patch 107734-11 or later 
Solaris 7 with patch 106951-23 or later 
Solaris 8 with patch 109148-25 or later 
Solaris 9 with patch 113986-05 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 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, 
Santa Clara, CA 95054 U.S.A. All rights reserved. 

[***** End Sun Alert ID: 55680 *****]
_______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Sun Microsystems  for the 
information contained in this bulletin.
_______________________________________________________________________________


CIAC, the Computer Incident Advisory Capability, is the computer
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(DOE) and the emergency backup response team for the National
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