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Secunia Research 08/04/2008
- Lotus Notes Applix Graphics Parsing Vulnerabilities -
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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
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1) Affected Software
* Lotus Notes 7.0.3 and 8.0
NOTE: Other versions may also be affected.
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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/
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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.
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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
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http://secunia.com/secunia_vacancies/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
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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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