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 processing the "SetLocalIniFilePath()" method can be exploited to cause a heap-based buffer overflow via an overly long string passed in the "NewPath" parameter.
3) An error due to an unsafe "SetLogFilePath()" method creating a log file in a specified location can be exploited in combination with e.g. the "SigMessage()" method to create an arbitrary file with controlled content.
4) A boundary error when processing the "SetTabletPortPath()" method can be exploited to cause a heap-based buffer overflow via an overly long string passed in the "NewPortPath" parameter.
Successful exploitation of these vulnerabilities allows execution of arbitrary code.
The vulnerabilities are confirmed in version 3.95. Other versions may also be affected.
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Subject: SigPlus Pro ActiveX Control Multiple Vulnerabilities
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