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From: X-Force (xforce_at_iss.net)
Date: Tue Aug 13 2002 - 12:57:03 CDT

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    Internet Security Systems Security Brief
    August, 13, 2002

    Remote Denial of Service Vulnerability in Oracle9i SQL*NET


    ISS X-Force has discovered a flaw in the debugging mechanism of Oracle9i. To
    exploit this vulnerability, attackers must send a specially crafted request
    to an Oracle9i SQL*NET listener. Due to an implementation flaw, Oracle9i
    does not handle the request correctly and fails. All Oracle9i installations
    are vulnerable to this attack.


    A successful attack on a vulnerable server can cause the SQL*NET listener to
    fail and crash. Database functionality cannot be restored until the listener
    is manually restarted.

    Affected Versions:

    Oracle9i 9.0.x
    Oracle9i 9.2

    Note: All platforms for the affected versions are vulnerable.

    For the complete ISS X-Force Security Advisory, please visit:

    - ------
    About Internet Security Systems (ISS)
    Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a
    pioneer and world leader in software and services that protect critical
    online resources from an ever-changing spectrum of threats and misuse.
    Internet Security Systems is headquartered in Atlanta, GA, with
    additional operations throughout the Americas, Asia, Australia, Europe
    and the Middle East.

    Copyright (c) 2002 Internet Security Systems, Inc. All rights reserved

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    Disclaimer: The information within this paper may change without notice.
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    X-Force PGP Key available on MIT's PGP key server and PGP.com's key
    server, as well as at http://www.iss.net/security_center/sensitive.php

    Please send suggestions, updates, and comments to: X-Force
    xforceiss.net of Internet Security Systems, Inc.

    Version: 2.6.2

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