DNS Cache poisoning and a tool to check for it...
Recently an exploit called DNS Cache poisoning has put several internet Domain Name System servers at risk. The risk is spread across multiple operating systems and multiple DNS implementation. DoxPara Research has put together a web based tool (on their main site), which allows you to check your upstream DNS server for vulnerabilities. I'm sure that patches will be coming soon from many vendors, but at least until then you can monitor your network traffic for suspicious behavior. Below is an example from a machine at home:
- DoxPara - http://www.doxpara.com/