[Full-disclosure] [ GLSA 200508-02 ] ProFTPD: Format string vulnerabilities

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 08/01/05

  • Next message: Sune Kloppenborg Jeppesen: "[Full-disclosure] [gentoo-announce] [ GLSA 200508-02 ] ProFTPD: Format string vulnerabilities" 
    To: gentoo-announce@gentoo.org
Date: Mon, 1 Aug 2005 22:56:11 +0200

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    Gentoo Linux Security Advisory GLSA 200508-02
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: ProFTPD: Format string vulnerabilities
          Date: August 01, 2005
          Bugs: #100364
            ID: 200508-02

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    Synopsis
    ========

    Under specific circumstances, ProFTPD is vulnerable to format string
    vulnerabilities, potentially resulting in the execution of arbitrary
    code.

    Background
    ==========

    ProFTPD is a configurable GPL-licensed FTP server software.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-ftp/proftpd < 1.2.10-r7 >= 1.2.10-r7

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

    "infamous42md" reported that ProFTPD is vulnerable to format string
    vulnerabilities when displaying a shutdown message containing the name
    of the current directory, and when displaying response messages to the
    client using information retrieved from a database using mod_sql.

    Impact
    ======

    A remote attacker could create a directory with a malicious name that
    would trigger the format string issue if specific variables are used in
    the shutdown message, potentially resulting in a Denial of Service or
    the execution of arbitrary code with the rights of the user running the
    ProFTPD server. An attacker with control over the database contents
    could achieve the same result by introducing malicious messages that
    would trigger the other format string issue when used in server
    responses.

    Workaround
    ==========

    Do not use the "%C", "%R", or "%U" in shutdown messages, and do not set
    the "SQLShowInfo" directive.

    Resolution
    ==========

    All ProFTPD users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-ftp/proftpd-1.2.10-r7"

    References
    ==========

      [ 1 ] CAN-2005-2390
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2390

    Availability
    ============

    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:

      http://security.gentoo.org/glsa/glsa-200508-02.xml

    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.

    License
    =======

    Copyright 2005 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).

    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.

    http://creativecommons.org/licenses/by-sa/2.0

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