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IY49881: CERT:ANTI-CACHE POISON TECHNIQUES TO NEGATIVE ANSWERS

A fix is available

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APAR status

  • Closed as program error.

Error description

  • If the cache is poison, it can create a temporary denial
    of service, until the time to live for that record expires.
    

Local fix

  • If the cache is poison, it can create a temporary denial
    of service, until the time to live for that record expires.
    

Problem summary

  • If the cache is poison, it can create a temporary denial
    of service, until the time to live for that record expires.
    

Problem conclusion

  • Do not cache negative responses from nameservers.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IY49881

  • Reported component name

    AIX 5L FOR POWE

  • Reported component ID

    5765E6100

  • Reported release

    510

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2003-10-17

  • Closed date

    2003-10-21

  • Last modified date

    2004-01-29

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    IY49883

Fix information

  • Fixed component name

    AIX 5L FOR POWE

  • Fixed component ID

    5765E6100

Applicable component levels

  • R510 PSY U496181

       UP04/01/29 I 1000

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Document Information

Modified date:
29 January 2004