[ GLSA 200401-02 ] Honeyd remote detection vulnerability via a probe packet

From: Tim Yamin (plasmaroo_at_gentoo.org)
Date: 01/21/04

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To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, security-alerts@linuxsecurity.com, gentoo-core@gentoo.org, gentoo-announce@gentoo.org

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    Gentoo Linux Security Advisory GLSA 200401-02
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    ~ http://security.gentoo.org
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    ~ Severity: Low
    ~ Title: Honeyd remote detection vulnerability via a probe packet
    ~ Date: January 21, 2004
    ~ Bugs: #38934
    ~ ID: 200401-02

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    Synopsis
    ========

    Identification of Honeyd installations allows an adversary to launch
    attacks specifically against Honeyd. No remote root exploit is currently
    known.

    Background
    ==========

    Honeyd is a virtual honeypot daemon that can simulate virtual hosts on
    unallocated IP addresses.

    Description
    ===========

    A bug in handling NMAP fingerprints caused Honeyd to reply to TCP
    packets with both the SYN and RST flags set. Watching for replies, it is
    possible to detect IP addresses simulated by Honeyd.

    Impact
    ======

    Although there are no public exploits known for Honeyd, the detection of
    Honeyd IP addresses may in some cases be undesirable.

    Workaround
    ==========

    Honeyd 0.8 has been released along with an advisory [ 1 ] to address
    this issue. In addition, Honeyd 0.8 drops privileges if permitted by the
    configuration file and contains command line flags to force dropping of
    privileges.

    Resolution
    ==========

    Users are encouraged to upgrade to honeyd version 0.8:

    ~ $> emerge sync
    ~ $> emerge -pv ">=net-analyzer/honeyd-0.8"
    ~ $> emerge ">=net-analyzer/honeyd-0.8"

    References
    ==========

    ~ [ 1 ] : http://www.honeyd.org/adv.2004-01.asc

    Concerns?
    =========

    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users machines is of utmost
    importance to us. Any security concerns should be addressed to
    security@gentoo.org or alternatively, you may file a bug at
    http://bugs.gentoo.org.
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