Secunia Research: activePDF DocConverter Applix Graphics Parsing Vulnerabilities
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Secunia Research 08/04/2008
- activePDF DocConverter 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
* activePDF DocConverter 3.8.4.0
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
"activePDF DocConverter enables you to convert to PDF from over 280
different file types, without requiring manual intervention."
Product Link:
http://www.activepdf.com/products/serverproducts/docconverter/
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4) Description of Vulnerability
Secunia Research has discovered some vulnerabilities in activePDF
DocConverter, which can be exploited by malicious people to compromise
a vulnerable system when converting 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 vulnerabilities will be addressed in an upcoming version 3.8.4.5.
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6) Time Table
21/11/2007 - Vendor notified.
21/11/2007 - Vendor response.
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
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relevant to their specific system configuration:
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Secunia also provides a publicly accessible and comprehensive advisory
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-97/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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