33 ordspråk av Johannes Ullrich

Johannes Ullrich

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At this point, Apple does not appear to offer the patches in distinct packages, which will make testing in larger environments tricky.

I don't think we will endorse this patch. There is no source code available, so we are not able to validate the patch.

At this point, we do not recommend applying these temporary patches.

We do suspect that Microsoft will still release an early patch given the imminent danger to its customers from this flaw. As stated by the company about two years ago, patches can be released within two days if needed. Based on prior public commitments, we do suspect that Microsoft will issue the patch early once they are convinced that customers require the use of Internet Explorer in production environments.

Each patch (official or not) has a chance to 'blow up' and cause unintended side effects.

Writing a cross-platform worm is difficult because it limits you to functions that are available on both operating systems. You have to also code the virus in assembly to make it work without relying on any OS-specific function.

I think we'll see an increase in virus activity as Linux becomes more mainstream.

What hackers are trying to find is, if they can make a bad Excel file or a bad Word file, does the program crash and allow them to compromise the system.

The Snort issue is more dangerous because the exploit is really simple.

More often than not, a patch will actually do more damage than good if you roll it out too quickly without testing it first.

These are the sort of problems that we typically see when patches don't cooperate well with various third-party software and some of the less used functions of Windows,

will connect to a control server to ask for instructions. It scans network neighborhoods and tries to infect them, as well.

This laptop will infect your systems from the inside.

The vulnerability itself has been known about for a while, but it was only a problem for a denial-of-service attack that would sometimes cause IE to crash. Up until now, no one knew how to mark the code and find it in memory to execute a remote code attack.

Users have to kill out of the browser and start over again. This stalled browser creates a DOS (denial of service) condition.

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