Re: Real-world attacks on sendmail CA-2003-07 seen

From: Curt Wilson (netw3_security@hushmail.com)
Date: 03/10/03

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    Date: Mon, 10 Mar 2003 00:52:52 -0800
To: incidents@securityfocus.com, bet@rahul.net
From: "Curt Wilson" <netw3_security@hushmail.com>

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    Could "actively exploited" only mean that someone has compiled the LSD code and is launching attacks in an attempt to find a vulnerable systems? I'm guessing (without having tried it yet) that the exploit code, even when directed at a non-vulnerable system, may trigger the log alert that the patch added to sendmail. Of course it would not be too hard for a decent coder to modify the exploit or write their own.

    If anyone actally detects a successful exploitation from this type of sendmail attack, for instance on one of your honeypot systems, please publicize any packet captures, tools, and any other data received in the process. I will check my own sendmail logs and see if I can come up with anything interesting on this front.

    Curt Wilson

    On Fri, 07 Mar 2003 09:37:13 -0800 Bennett Todd <bet@rahul.net> wrote:
    >Just a heads-up everyone, the sendmail header parsing buffer
    >overflow announced this last Monday, as (among other things) CERT
    >CA-2003-07[1] is now being actively exploited on the internet.
    >
    >We logged received msgs that triggered the truncator code this
    >morning at about 3 in the morning, US/Eastern; three different
    >attacks spread over two different MX hosts.
    >

    Curt R. Wilson
    Netw3 Security
    www.netw3.com
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