Secunia Research has discovered two vulnerabilities in Microsoft Office, which can be exploited by malicious people to compromise a user's system. An input validation error in the TIFF Import/Export Graphic Filter when copying certain data can be exploited to cause a heap-based buffer overflow via a specially crafted TIFF image. Another input validation error in the TIFF Import/Export Graphic Filter when copying certain data after having encountered a specific error can be exploited to cause a heap-based buffer overflow via a specially crafted TIFF image. Successful exploitation of the vulnerabilities may allow execution of arbitrary code when processing a TIFF image in an application using the graphics filter (e.g. opening the image in Microsoft Photo Editor or importing it into an Office document).
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