IBM Lotus Notes Buffer Overflows in Applix Viewer Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1019844
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SecurityTracker URL: http://securitytracker.com/id?1019844
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CVE Reference: CVE-2007-5405
, CVE-2007-5406
(Links to External Site)
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Date: Apr 14 2008
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Impact: Denial of service via network, Execution of arbitrary code via network, User access via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Advisory: Secunia Research
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Version(s): 6.0, 6.5, 7.0, 8.0, 8.0.1
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Description: Some vulnerabilities were reported in IBM Lotus Notes in the processing of Applix documents. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can cause denial of service conditions.
A remote user can create a specially crafted Applix (.ag) file that, when viewed by the target user, will trigger a buffer overflow
and execute arbitrary code on the target system [CVE-2007-5405]. The code will run with the privileges of the target user.
A
specially crafted *BEGIN tag and *BEGIN tage ENCODING attribute value can trigger a stack overflow.
Specially crafted tokens
from an input file can trigger a heap overflow.
Specially crafted tokens can cause the software to enter an infinite loop and
consume excessive CPU resources [CVE-2007-5406].
The vulnerability resides in the third party Autonomy Keyview utility.
The
vendor has assigned SPR# PRAD79EMMB to this vulnerability.
The vendor was notified on November 21, 2007.
Dyon Balding of Secunia
Research reported this vulnerability.
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Impact: A remote user can create a file that, when viewed by the target user, will execute arbitrary code on the target user's system.
A
remote user can create a file that, when viewed by the target user, will cause the target application to consume excessive CPU resources.
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Solution: The vendor has issued a patch, available via IBM Support.
The vendor's advisory is available at:
http://www-1.ibm.com/support/docview.wss?uid=swg21298453
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Vendor URL: www-1.ibm.com/support/docview.wss?uid=swg21298453 (Links to External Site)
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Cause: Boundary error, State error
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Underlying OS: Windows (Any)
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Reported By: Secunia Research <remove-vuln@secunia.com>
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Message History:
None.
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Source Message Contents
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Date: Mon, 14 Apr 2008 12:13:45 +0200
From: Secunia Research <remove-vuln@secunia.com>
Subject: Secunia Research: Lotus Notes Applix Graphics Parsing
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======================================================================
Secunia Research 08/04/2008
- Lotus Notes Applix Graphics Parsing Vulnerabilities -
======================================================================
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
======================================================================
1) Affected Software
* Lotus Notes 7.0.3 and 8.0
NOTE: Other versions may also be affected.
======================================================================
2) Severity
Rating: Highly critical
Impact: From remote
Where: System access
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3) Vendor's Description of Software
"Security-rich software that enables businesses to communicate,
collaborate and increase productivity."
Product Link:
http://www-306.ibm.com/software/lotus/
======================================================================
4) Description of Vulnerability
Secunia Research has discovered some vulnerabilities in Autonomy
Keyview utilised in Lotus Notes, which can be exploited by malicious
people to compromise a vulnerable system when viewing Applix
documents.
1) An unsafe call to "sscanf()" when parsing the "ENCODING" attribute
of the "*BEGIN" tag can be exploited to cause a stack-based buffer
overflow.
2) A boundary error when parsing overly long tokens from the input
file can be exploited to cause a heap-based buffer overflow.
3) A boundary error when parsing the initial "*BEGIN" tag can be
exploited to cause stack-based buffer overflow.
Successful exploitation of the above vulnerabilities allows execution
of arbitrary code.
4) A logic error when parsing long tokens can result in an infinite
loop. Exploitation will result in maximum CPU usage until an
application-configured timeout expires. In some cases memory usage
will increase until the OS terminates the process.
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5) Solution
The vendor has issued a patch.
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6) Time Table
21/11/2007 - Autonomy, IBM and other vendors notified.
21/11/2007 - Autonomy respond.
21/11/2007 - IBM respond.
11/03/2008 - Symantec release p189 of SMSSMTP 5.0.1 containing fix.
14/03/2008 - Notify IBM that fixed versions have been published.
14/03/2008 - Confirmation from IBM that they are developing fixes.
08/04/2008 - Public disclosure.
======================================================================
7) Credits
Discovered by Dyon Balding, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2007-5405 for the overflows and CVE-2007-5406 for the infinite
loop.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://corporate.secunia.com/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.
http://secunia.com/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://corporate.secunia.com/secunia_research/33/
Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:
http://secunia.com/secunia_vacancies/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
======================================================================
10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-96/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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