IE/Access Flaw Leaves Windows PCs Vulnerable
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London-based security firm GFI has uncovered a flaw in Microsoft Corp.'s Internet Explorer browser and Microsoft Access 2000 that could be used to automatically execute macros on a victim's machine.
"It can be most dangerous to open an email which uses this exploit because it will run on any computer having Internet Explorer and Microsoft Access 2000, which forms part of MS Office," warned GFI Security Engineer Sandro Gauci. "Our tests on this email threat showed that, in Outlook 2000, the embedded VBA code was executed automatically even within the High Security and Restricted Zone. Such an email that contains malicious code could do almost anything on the recipient's machine."
The flaw in Internet Explorer allows a malicious user to run arbitrary code on a target machine as it attempts to view a Web site or an HTML email, according to GFI. The company said a malicious hacker could exploit the flaw by embedding macro code such as VBA within an Access database file (.mdb) that would in turn be nestled within an Outlook Express email file or Multipart HTML File (.mhtml).