Microsoft has issued yet another security advisory in the wake of attacks targeting Word. The company said in the advisory that it has received reports of attackers targeting a flaw in the handling of .doc files. The attacks are not currently believed to be widespread, and the initial exploit attempts have been in specially targeted attacks.
The vulnerability lies in the way Word 2002 Service Pack 3 handles .doc files. An attacker could use a specially-crafted document to cause a memory overflow error and application crash. The error would then leave the system vulnerable and allow the attacker to remotely execute code on the target system. Microsoft said that the vulnerability only appears to exist in Office Word 2002 Service Pack 3. No other versions of Word or Office appear to be at risk for attack.
In addition to basic security practices such as enabling a firewall and antivirus software, Microsoft recommends that users exercise caution in loading mail attachments and avoid suspicious .doc files.
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