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Secunia Research 03/02/2011
- SigPlus Pro ActiveX Control Buffer Overflow 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
* SigPlus Pro ActiveX Control 3.95
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System access
Where: Remote
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3) Vendor's Description of Software
"SigPlus Pro ActiveX electronic signature software provides
everything you need to create applications using ActiveX or view
electronically signed documents."
Product Link:
http://www.topazsystems.com/Software/download/sigplusactivex.htm
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4) Description of Vulnerability
Secunia Research has discovered multiple vulnerabilities in SigPlus
Pro ActiveX control, which can be exploited by malicious people to
compromise a user's system.
1) A boundary error when processing the "KeyString" property can be
exploited to cause a heap-based buffer overflow via an overly long
string.
2) A boundary error when handling the "SetLocalIniFilePath()" method
can be exploited to cause a heap-based buffer overflow via an overly
long string passed as the "NewPath" parameter.
3) A boundary error when handling the "SetTabletPortPath()" method
can be exploited to cause a heap-based buffer overflow via an overly
long string passed as the "NewPortPath" parameter.
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5) Solution
Upgrade to version 4.29.
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6) Time Table
07/01/2011 - Request for security contact.
11/01/2011 - Vendor response.
11/01/2011 - Vendor notified.
25/01/2011 - Request for status update.
01/02/2011 - Request for status update.
02/02/2011 - Vendor releases fixed version.
03/02/2011 - Public disclosure.
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7) Credits
Discovered by Dmitriy Pletnev, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2011-0324 for the vulnerabilities.
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9) About Secunia
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2011-2/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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