If you were one of those who downloaded and used Microsoft's GDI+ Detection Tool, you may have noticed that it only scans Microsoft Software; specifically, those installed via the MSI Installer.
If you are wondering if there is a way to scan your non-Microsoft software for the JPEG GDI+ vulnerability, then you will be glad to know that SANS Internet Security Center has released a GDI Scanner that goes beyond Microsoft's GDI+ Detection Tool and reveals which of your non-Microsoft Software is vulnerable to the JPEG GDI+ exploit.
Unfortunately, I am unable to advise on how to get those non-Microsoft softwares patched; you will have to check with the vendor.
In other related news (this really belongs in my linkblog), it looks like a University Professor is going to teach a fall course titled "Computer Viruses and Malware". Part of the course involves his undergraduate students writing some malicious code.
We live in interesting times.