[UNIX] fetchmail Configuration Information Disclosure

From: SecuriTeam (support_at_securiteam.com)
Date: 11/02/05

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    To: list@securiteam.com
    Date: 2 Nov 2005 09:16:53 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      fetchmail Configuration Information Disclosure


    " <http://fetchmail.berlios.de/> Fetchmail is a full-featured, robust,
    well-documented remote-mail retrieval and forwarding utility intended to
    be used over on-demand TCP/IP links (such as SLIP or PPP connections). "

    fetchmail does not limit the settings file's readability, this allow any
    user on the machine obtain to sensitive information.


    Vulnerable Systems:
     * fetchmail version
     * fetchmail version 6.2.5
     * fetchmail version 6.2.0
     * fetchmailconf version 1.43
     * fetchmailconf version 1.43.1

    Immune Systems:
     * Fetchmail version 6.2.9-rc6
     * fetchmailconf version 1.43.2
     * fetchmailconf version 1.49
     * fetchmail version 6.3.0

    The fetchmailconf program opens the control file, writes the configuration
    to it, and only then changes the file's security settings to 0600
    (rw-------). As the file, usually contains passwords, not making it
    unreadable to other users, can cause a situation where the file can be
    used to expose passwords.

    Run "umask 077", then run "fetchmailconf" from the same shell. After
    fetchmailconf has finished, you can restore your old umask.

    Vendor Status:
    The vendor has fixed the issue:
    For users of fetchmail- Download
    <http://developer.berlios.de/project/showfiles.php?group_id=1824&release_id=6617> fetchmailconf-1.43.2.gz.

    For users of fetchmail-6.2.6* or 6.2.9* before 6.2.9-rc6: update to the
    latest fetchmail-devel package

    CVE Information:


    The information has been provided by
    <mailto:ma+nomail@dt.e-technik.uni-dortmund.de> Matthias Andree.
    The original article can be found at:


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