ISS Protection Brief: Snort Back Orifice Parsing Remote Code Execution

From: X-Force (xforce_at_iss.net)
Date: 10/18/05

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    Internet Security Systems Protection Advisory
    October 18, 2005

    Snort Back Orifice Parsing Remote Code Execution

    Summary:

    ISS X-Force has discovered a remotely exploitable vulnerability in Snort's
    Back Orifice pre-processor. A stack-based overflow can be triggered with a
    single UDP packet, allowing an attacker to fully compromise a Snort or
    Sourcefire installation. X-Force believes this vulnerability to be trivially
    exploitable, and urges affected users to upgrade immediately.

    Business Impact:

    Compromise of networks and machines using Snort may lead to exposure of
    confidential information, loss of productivity, and further network
    compromise. Successful exploitation of these vulnerabilities could be
    used to gain unauthorized access to networks and machines. No authentication
    is required for an attacker to leverage these vulnerabilities to compromise
    a network or machine. Snort installations are vulnerable in their default
    configurations. It is not necessary to know the exact location of Snort
    sensors, but simply to attack a network which they may be listening on.

    For the complete X-Force Protection Advisory, please visit:
    http://xforce.iss.net/xforce/alerts/id/207

    ______

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