[ GLSA 200403-10 ] Fetchmail 6.2.5 fixes a remote DoS

From: Kurt Lieber (klieber_at_gentoo.org)
Date: 03/31/04

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To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, alerts@linuxsecurity.com

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    Gentoo Linux Security Advisory GLSA 200403-10
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                                                 http://security.gentoo.org
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      Severity: Normal
         Title: Fetchmail 6.2.5 fixes a remote DoS
          Date: March 30, 2004
          Bugs: #37717
            ID: 200403-10

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    Synopsis
    ========

    Fetchmail versions 6.2.4 and earlier can be crashed by sending a
    specially-crafted email to a fetchmail user.

    Background
    ==========

    Fetchmail is a utility that retrieves and forwards mail from remote
    systems using IMAP, POP, and other protocols.

    Affected packages
    =================

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
         net-mail/fetchmail <= 6.2.4 >= 6.2.5

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

    Fetchmail versions 6.2.4 and earlier can be crashed by sending a
    specially-crafted email to a fetchmail user. This problem occurs
    because Fetchmail does not properly allocate memory for long lines in
    an incoming email.

    Impact
    ======

    Fetchmail users who receive a malicious email may have their fetchmail
    program crash.

    Workaround
    ==========

    While a workaround is not currently known for this issue, all users are
    advised to upgrade to the latest version of the affected package.

    Resolution
    ==========

    Fetchmail users should upgrade to version 6.2.5 or later:

        # emerge sync
        # emerge -pv ">=net-mail/fetchmail-6.2.5"
        # emerge ">=net-mail/fetchmail-6.2.5"

    References
    ==========

      [ 1 ] http://xforce.iss.net/xforce/xfdb/13450
      [ 2 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0792

    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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