[NEWS] Sybase EAServer Buffer Overflow

From: SecuriTeam (support_at_securiteam.com)
Date: 07/21/05

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Date: 21 Jul 2005 13:30:23 +0200

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      Sybase EAServer Buffer Overflow
    ------------------------------------------------------------------------

    SUMMARY

    "Sybase EAServer is the open application server for powering business
    critical applications that provide the lowest total cost of ownership."

    A buffer overflow vulnerability has been discovered in EAServer, if
    exploited, this can result in user-specified code being executed under the
    security context of the jagsrv.exe process.

    DETAILS

    Vulnerable Systems:
     * Sybase EAServer versions 4.2.5 up to 5.2

    After authenticating to /WebConsole/ if an attacker sets the value of the
    JavaScript parameter in TreeAction.do to a large value a return address
    can be overwritten due to a stack-based buffer overflow.

    Patch Availability:
    The issue is resolved by applying the following EBFs to the correct
    platform and version. Each EBFs are available from the Sybase EBFs and
    Maintenance site at <http://downloads.sybase.com/>
    http://downloads.sybase.com/

    Vendor Status:
    Sybase was contacted on 05/05/2005.
    Vendor released advisory corresponding this issue:
     <http://www.sybase.com/detail?id=1036742>
    http://www.sybase.com/detail?id=1036742

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:spilabs@spidynamics.com>
    David Dewey.
    The original article can be found at:
    <http://www.sybase.com/detail?id=1036742>
    http://www.sybase.com/detail?id=1036742

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