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AUSCERT External Security Bulletin Redistribution
ESB-2009.1596
Security Vulnerability in wget Related to Certificate
Parsing may Allow Man-in-the-Middle (MITM) Attack
4 December 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: wget
Publisher: Sun Microsystems
Operating System: Solaris
OpenSolaris
Impact/Access: Unauthorised Access -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2009-3490
Reference: ESB-2009.1376
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-273590-1
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Security Vulnerability in wget(1) Related to Certificate Parsing may
Allow Encrypted HTTP Communication to be Intercepted Using a
Man-in-the-Middle (MITM) Attack
_________________________________________________________________
Category : Security
Release Phase : Workaround
Bug Id : 6884801
Product : Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris
Date of Workaround Release : 02-Dec-2009
A security vulnerability in the wget(1) command shipped with Solaris:
1. Impact
A security vulnerability in the wget(1) command shipped with Solaris
may allow a local or remote unprivileged user who provides a specially
crafted certificate signed by a legitimate Certification Authority to
intercept encrypted HTTP (HTTPS) communication between the wget(1)
client and a web server using a man-in-the-middle (MITM) attack.
Additional information regarding this issue is available at:
* CVE-2009-3490 at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3490
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 9 with patch 125326-01
* Solaris 10 without patch 125215-03
* OpenSolaris based upon builds snv_01 through snv_125
x86 Platform
* Solaris 9 with patch 125327-01
* Solaris 10 without patch 125216-03
* OpenSolaris based upon builds snv_01 through snv_125
Note 1: OpenSolaris distributions may include additional bug fixes
above and beyond the build from which it was derived. To determine the
base build of OpenSolaris, the following command can be used:
$ uname -v
snv_86
Note 2: HTTPS protocol support for the wget(1) command in Solaris 9
was added via patches 125326-01 (SPARC) and 125327-01 (x86).
Therefore, Solaris 9 is only vulnerable if one of these patches is
installed.
Note 3: Solaris 8 does not include support for the wget(1) command and
therefore is not impacted by this issue.
3. Symptoms
There are no predictable symptoms that would indicate the described
issue has been exploited on a system.
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 10 with patch 125215-03 or later
* OpenSolaris based upon builds snv_126 or later
x86 Platform
* Solaris 10 with patch 125216-03 or later
* OpenSolaris based upon builds snv_126 or later
A final resolution is pending completion for Solaris 9.
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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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