Secunia Research has discovered three integer overflow vulnerabilities in libgdiplus for Mono, which can be exploited by malicious people to compromise an application using the library. Version 2.6.7 is affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/93004/secunia-libgdiplus.txt
Source: https://packetstormsecurity.com/files/93004/Mono-libgdiplus-Image-Processing-Three-Integer-Overflows.html