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AUSCERT External Security Bulletin Redistribution
ESB-2008.0588 -- [Solaris]
Security Vulnerability in inet_network() Library Routine May
Allow Denial of Service (DoS) to Applications
12 June 2008
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: inet_network() Library
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Denial of Service
Access: Remote/Unauthenticated
CVE Names: CVE-2008-0122
Ref: ESB-2008.0102
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-238493-1
Revision History: June 12 2008: Removed Comment As Patches Are Now
Available
June 6 2008: Initial Release
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Solution Type: Sun Alert
Solution 238493 : Security Vulnerability in inet_network() Library
Routine May Allow Denial of Service (DoS) to Applications
Bug ID: 6653976, 4491688
Product
Solaris 8 Operating System, Solaris 9 Operating System,
Solaris 10 Operating System, OpenSolaris
Date of Preliminary Release: 04-Jun-2008
Date of Resolved Release: 09-Jun-2008
SA Document Body
Security Vulnerability in inet_network() Library Routine May Allow Denial
of Service (DoS) to Applications (see below for details)
1. Impact
An off-by-one buffer overflow in the inet_network() library function,
defined in the libsocket(3LIB), libresolv(3LIB), and the SunOS 4.x binary
compatibility libraries libc.so.1.9 and libc.so.2.9 in Solaris, may affect
applications which make use of this routine. Depending on the
application, this may allow a local or remote unprivileged user to crash
the application using the inet_network() routine (which is a type of
Denial of Service).
This issue is also referenced in the following document:
CVE-2008-0122 at
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0122
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
*
Solaris 8 for libresolv(3LIB)without patch 109326-21
*
Solaris 8 for libsocket(3LIB)without patch 111327-06
*
Solaris 8 for SunOS 4.x Binary Compatibility libraries without patch
109152-03
*
Solaris 9 for SunOS 4.x Binary Compatibility libraries without patch
112874-45
*
Solaris 10 for SunOS 4.x Binary Compatibility libraries without patch
136892-01
*
OpenSolaris based upon builds snv_01 through snv_87 (SunOS 4.x Binary
Compatibility libraries only (6653976))
x86 Platform
*
Solaris 8 for libresolv(3LIB) without patch 109327-21
*
Solaris 8 for libsocket(3LIB) without patch 111328-05
Note 1: The inet_network() function in the libsocket(3LIB) and
libresolv(3LIB) libraries isn't affected by this issue in Solaris
9, 10 and OpenSolaris.
Note 2: The SunOS 4.x binary compatibility libraries allow existing SunOS
4.x applications, including OpenWindows applications, to run on
Solaris without modification or recompilation and only apply to
the SPARC architecture. More details can be found in the "Binary
Compatibility Guide" at http://docs.sun.com/.
Note 3: A partial test to check if an application links with a library
such as libresolv(3LIB) is to use ldd(1):
$ ldd /path/to/Application | grep libresolv
libresolv.so.2 => /usr/lib/libresolv.so.2
A comprehensive test to check if an application links with a
library such as libresolv(3LIB) requires the use of pldd(1)
against the running application since ldd(1) does not list any
shared objects explicitly attached using dlopen(3C). For example:
$ pldd `pgrep Application` | grep libresolv
/usr/lib/libresolv.so.2
3. Symptoms
If the described issue is exploited to cause a Denial of Service (DoS) to
an application which links to an affected library, the application will
exit and may generate an error message about a Segmentation Fault,
potentially writing a core(4) file.
4. Workaround
There is no workaround for this issue. Please see the "Resolution"
section below.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
*
Solaris 8 for libresolv(3LIB)with patch 109326-21 or later
*
Solaris 8 for libsocket(3LIB)with patch 111327-06 or later
*
Solaris 8 for SunOS 4.x Binary Compatibility libraries with patch
109152-03 or later
*
Solaris 9 for SunOS 4.x Binary Compatibility libraries with patch
112874-45 or later
*
Solaris 10 for SunOS 4.x Binary Compatibility libraries with patch
136892-01 or late
Solaris 8 for libsocket(3LIB) with patch 111328-05 or later
*
OpenSolaris based upon builds snv_88 or later (SunOS 4.x Binary
Compatibility libraries only (6653976))
X86 Platform
*
Solaris 8 for libresolv(3LIB) with patch 109327-21 or later
*
Solaris 8 for libsocket(3LIB) with patch 111328-05 or later
For more information on Security Sun Alerts, see Technical Instruction
ID 213557
http://sunsolve.sun.com/search/document.do?assetkey=1-61-213557-1
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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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