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Microsoft denies Windows 2000 security risk

Steven Parker   on 14 November 2007 - 09:29 · 11 comments & 8245 views

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Microsoft has hit back at claims that Windows 2000 users are exposed to a loophole in the operating system's random number generator, a flaw researchers claim allows hackers to retrieve users' personal information. Dr Benny Pinkas from the Department of Computer Science at the University of Haifa, said CryptGenRandom can be exploited by hackers to access information such as email, password and credit card details.

"This is not a theoretical discovery. Anyone who exploits this security loophole can definitely access this information on other computers," he said. However, Mark Miller, Microsoft's director for security response communications, said after further investigation into the claims by Dr Pinkas, the company found that there is no security vulnerability.

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(4 replies) #1 RAID 0 on 14 Nov 2007 - 09:36
I'm not sure how to take this. FTA: "...even information that is no longer stored on the computer." How can you access something that's not there? If this is true, many businesses should upgrade to Vista business or enterprise STAT!
#1.1 vetmarkjensen on 14 Nov 2007 - 12:43
If you read a little more of TFA than that piece you quoted, you would see "this loophole enables hackers to access information that was sent from the computer prior to the security breach and even information that is no longer stored on the computer" meaning encrypted emails could be broken (per the report, I have no personal knowledge if this is true, just what it says).

The claim is that the random number generator isn't random enough. Oh, and XP/Vista haven't been analyzed, so they are 'unknown', per the report.
#1.2 RAID 0 on 14 Nov 2007 - 19:41
Quote - (markjensen said @ #1.1)
If you read a little more of TFA than that piece you quoted, you would see "this loophole enables hackers to access information that was sent from the computer prior to the security breach and even information that is no longer stored on the computer" meaning encrypted emails could be broken (per the report, I have no personal knowledge if this is true, just what it says).

The claim is that the random number generator isn't random enough. Oh, and XP/Vista haven't been analyzed, so they are 'unknown', per the report.



Oh, I read it. I still have trouble comprehending accessing info that's no longer there. That's all. BTW, I was being snarky with the Vista bit. Recalibrate your sarcasm detector.
#1.3 vetmarkjensen on 14 Nov 2007 - 20:22
Quote - (RAID 0 said @ #1.2)
Oh, I read it. I still have trouble comprehending accessing info that's no longer there. That's all. BTW, I was being snarky with the Vista bit. Recalibrate your sarcasm detector.
Ahhh.. I wasn't quite sure about the Vista thing. Humor is sometimes hard to pass through a text post (even with limited smileys to assist). I must have missed that.

As far as the info that is no longer on the PC, I surmise that they are talking about encrypted emails that were sent. If I were to capture these, and crack the specific machine's number generator, I can decode the email, even though it is no longer on the computer I cracked.

Sort of a sensational-sounding claim when worded like it is.
#1.4 RAID 0 on 14 Nov 2007 - 22:47
Quote - (markjensen said @ #1.3)
Quote - (RAID 0 said @ #1.2)
Oh, I read it. I still have trouble comprehending accessing info that's no longer there. That's all. BTW, I was being snarky with the Vista bit. Recalibrate your sarcasm detector.
Ahhh.. I wasn't quite sure about the Vista thing. Humor is sometimes hard to pass through a text post (even with limited smileys to assist). I must have missed that.

As far as the info that is no longer on the PC, I surmise that they are talking about encrypted emails that were sent. If I were to capture these, and crack the specific machine's number generator, I can decode the email, even though it is no longer on the computer I cracked.

Sort of a sensational-sounding claim when worded like it is.



Ahhh.. OK. I get it. You're right, it is sensational-sounding. Thanks for helping me understand that.
/no sarcasm
#2 virtorio on 14 Nov 2007 - 09:49
I'd love to see Dr Benny Pinkas get someone’s "personal information" by exploiting a flaw in W2K's "random number generator", I really would, as it sound like bulls**t to me.
(1 reply) #3 daPhoenix on 14 Nov 2007 - 10:54
According to Microsoft, there was no URI vulnerability either. Right.
#3.1 XerXis on 14 Nov 2007 - 11:13
Quote - (daPhoenix said @ #3)
According to Microsoft, there was no URI vulnerability either. Right.


well, that depends on how you look at it. I for one still follow their first stance, namely that it is the responsability of the receiving application to check the incoming URI parameters for strange characters or possible buffer overflows.
(1 reply) #4 Swordnyx on 14 Nov 2007 - 15:51
Who cares about Windows 2000 anyway?
#4.1 vetmarkjensen on 14 Nov 2007 - 15:58
Ummm... Maybe businesses who use it? The whole world isn't XP/Vista.
#5 Croquant on 14 Nov 2007 - 19:08
Technically, it is impossible for any binary computer to generate a truly random number. Any sequence of so-called "random" numbers generated by a binary computer will eventually result in a predictable pattern.

For the generation of numbers to be truly random you'd have to use a quantum computer that makes use of Heisenburg uncertainty when it generates random numbers. And that doesn't exist yet.

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