Attackers have found another hole in Microsoft's Office products. Yesterday, Symantec reported that it has discovered a targeted attack that takes advantage of an unpatched vulnerability in Microsoft's PowerPoint software.
This PowerPoint attack was discovered late Wednesday by a Symantec customer, who received a Chinese-character e-mail from a Gmail account. The e-mail contained a PowerPoint attachment that installed two pieces of malicious code when opened: a Trojan horse program, called Trojan.PPDDropper.B, and a backdoor program called Backdoor.Bifrose.E.
The backdoor program tries to cover its tracks, by writing over the original PowerPoint document. It then awaits instructions from the attackers, who can use it to control the infected system
Here is another link to the information about the Vulberabilityhttp://www2.csoonline.com/blog_view.html?CID=22959