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Set Password Activation Time in Snow Leopard

In Snow Leopard, you can now set an amount of time after your Mac goes to sleep or engages the screen saver before it requires a password to log back on. In Leopard, the option was simply to require the password or not. Choose among several increments, between 5 seconds and 4 hours, from System Preferences > Security.

Submitted by
Doug McLean

 

 

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QuickTime 7.4.1 Fixes Zero-Day Vulnerability

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Apple has released QuickTime 7.4.1, a critical security update all users should apply immediately. It is available via Software Update and as a direct download for Leopard, Tiger, Panther, and Windows systems.

This update patches a month-old zero-day vulnerability in the QuickTime streaming protocol (RTSP) that could allow an attacker to take over your computer if you visit a malicious Web site or receive an email with a malicious link. In security parlance, we call this "remote execution of arbitrary code," using a vulnerability for which no patch exists (the "zero-day" part). This is similar to a previous vulnerability in RTSP that Apple patched in the QuickTime 7.3.1 update (see "QuickTime 7.3.1 Fixes RTSP Vulnerability," 2007-12-14).

As usual, release notes are a sparse "addresses security issues and improves compatibility with third-party applications." A separate security note provides more details, but the security information isn't even referenced by the release notes on the download page, although they do appear on the security updates page.

Since this vulnerability has been in the wild with sample exploits for nearly a month, it is absolutely critical to apply the patch as quickly as possible.

 

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