Security
Attackers are targeting Windows users with malformed .ani files

Windows falls victim to animated cursor attacks

Corrupted cursor files could deliver malicious payloads

Shaun Nichols in California

Microsoft is warning that attackers are actively exploiting an unpatched vulnerability in animated cursor (.ani) files for Windows. 

Security vendors have seen targeted attacks that used malformed .ani files. The flaw could allow attackers to take control of a system with no user interaction.

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The attack is launched when the user receives a specially crafted .ani file embedded in either a web page or email. The file is installed on the user's system and then delivers its malicious payload.

Nearly all supported versions of Windows and Internet Explorer are vulnerable to the attack. Only users running Windows Vista and Internet Explorer 7 in protected mode appear to be safe, according to Microsoft.

In protected mode, no file is allowed to access or modify any system files without user permission.

Alternative browsers such as Firefox and Opera do not appear to be vulnerable to the attack.

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