Vulnerability in Intel processors

Discussion in 'other security issues & news' started by BoerenkoolMetWorst, Dec 7, 2011.

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  1. BoerenkoolMetWorst

    BoerenkoolMetWorst Registered Member

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  2. Ranget

    Ranget Registered Member

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    how is that possible

    question how a processor could have a vulnerability ??
     
  3. Hungry Man

    Hungry Man Registered Member

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    For a long time CPUs have handled DEP - ie: Hardware DEP. You need software support but it's built in.

    Just as encryption can be built into a hard drive.

    There are a lot of security implementations, ROM code, etc built right onto your hardware.

    Errors in implementation and design exist in the hardware just as they do in the software.
     
  4. Ranget

    Ranget Registered Member

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    i remember some of Athlon old CPU used to have
    "antivirus feature " written on the outside of the Box

    anyway i think that's a bit technical but
    how is a CPU going to Prevent Data execution
    on infected system

    if a Malware Run on the system it will run whether a cpu like that or not
    or whether we like that or not
    the cpu job all has to do is to crunch data :/ so
    how is that possible

    sorry for asking but i didn't understand what has the cpu to do with
    antivirus software
     
  5. Hungry Man

    Hungry Man Registered Member

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    Data Execution Prevention (DEP) does not stop programs or malware from running. It provides (hardware) support to create executable and nonexecutable address space in memory.

    This doesn't stop malware necessarily but it makes exploits a lot harder. If I exploit a program with DEP I can't just load whatever I like into memory and run my malware because the address space isn't executable.

    There are ways around this (return oriented programming) but in conjunction with other methods it is very effective at preventing exploits.
     
  6. Ranget

    Ranget Registered Member

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    thanks for the info
    Hungry Man
     
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