[ GLSA 200404-18 ] Multiple Vulnerabilities in ssmtp

From: Joshua J. Berry (condordes_at_gentoo.org)
Date: 04/27/04

  • Next message: Mandrake Linux Security Team: "MDKSA-2004:037 - Updated kernel packages fix multiple vulnerabilities" 
    To: gentoo-announce@gentoo.org
Date: Mon, 26 Apr 2004 15:55:08 -0700

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 200404-18
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                                http://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

      Severity: High
         Title: Multiple Vulnerabilities in ssmtp
          Date: April 26, 2004
          Bugs: #47918, #48435
            ID: 200404-18

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Synopsis
    ========

    There are multiple format string vulnerabilities in the SSMTP package,
    which may allow an attacker to run arbitrary code with ssmtp's
    privileges (potentially root).

    Background
    ==========

    SSMTP is a very simple mail transfer agent (MTA) that relays mail from
    the local machine to another SMTP host. It is not designed to function
    as a full mail server; its sole purpose is to relay mail.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-mail/ssmtp <= 2.60.4-r2 >= 2.60.7

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

    There are two format string vulnerabilities inside the log_event() and
    die() functions of ssmtp. Strings from outside ssmtp are passed to
    various printf()-like functions from within log_event() and die() as
    format strings. An attacker could cause a specially-crafted string to
    be passed to these functions, and potentially cause ssmtp to execute
    arbitrary code.

    Impact
    ======

    If ssmtp connects to a malicious mail relay server, this vulnerability
    can be used to execute code with the rights of the mail sender,
    including root.

    Workaround
    ==========

    There is no known workaround at this time. All users are advised to
    upgrade to the latest available version of ssmtp.

    Resolution
    ==========

    All users are advised to upgrade to the latest available version of
    ssmtp.

        # emerge sync

        # emerge -pv ">=net-mail/ssmtp-2.60.7"
        # emerge ">=net-mail/ssmtp-2.60.7"

    References
    ==========

      [ 1 ] Secunia Advisory
            http://secunia.com/advisories/11378/
      [ 2 ] CVE Reference
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0156
      [ 3 ] Debian Advisory
            http://lists.debian.org/debian-security-announce/debian-security-announce-2004/msg00084.html

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

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

         http://security.gentoo.org/glsa/glsa-200404-18.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 2004 Gentoo Technologies, 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/1.0

  • Next message: Mandrake Linux Security Team: "MDKSA-2004:037 - Updated kernel packages fix multiple vulnerabilities"

    Relevant Pages