Vulnerabilities > CVE-2008-4578 - Permissions, Privileges, and Access Controls vulnerability in Dovecot

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200812-16.
#
# The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(35108);
  script_version("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:45");

  script_cve_id("CVE-2008-4577", "CVE-2008-4578", "CVE-2008-4870", "CVE-2008-4907");
  script_bugtraq_id(31587);
  script_xref(name:"GLSA", value:"200812-16");

  script_name(english:"GLSA-200812-16 : Dovecot: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200812-16
(Dovecot: Multiple vulnerabilities)

    Several vulnerabilities were found in Dovecot:
    The 'k'
    right in the acl_plugin does not work as expected (CVE-2008-4577,
    CVE-2008-4578)
    The dovecot.conf is world-readable, providing
    improper protection for the ssl_key_password setting
    (CVE-2008-4870)
    A permanent Denial of Service with broken mail
    headers is possible (CVE-2008-4907)
  
Impact :

    These vulnerabilities might allow a remote attacker to cause a Denial
    of Service, to circumvent security restrictions or allow local
    attackers to disclose the passphrase of the SSL private key.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200812-16"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Dovecot users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-mail/dovecot-1.1.7-r1'
    Users should be aware that dovecot.conf will still be world-readable
    after the update. If employing ssl_key_password, it should not be used
    in dovecot.conf but in a separate file which should be included with
    'include_try'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 264);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:dovecot");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/12/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-mail/dovecot", unaffected:make_list("ge 1.1.7-r1"), vulnerable:make_list("lt 1.1.7-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Dovecot");
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandriva Linux Security Advisory MDVSA-2008:232. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(38066);
  script_version ("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:50");

  script_cve_id("CVE-2008-4577", "CVE-2008-4578");
  script_xref(name:"MDVSA", value:"2008:232");

  script_name(english:"Mandriva Linux Security Advisory : dovecot (MDVSA-2008:232)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandriva Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The ACL plugin in dovecot prior to version 1.1.4 treated negative
access rights as though they were positive access rights, which
allowed attackers to bypass intended access restrictions
(CVE-2008-4577).

The ACL plugin in dovecot prior to version 1.1.4 allowed attackers to
bypass intended access restrictions by using the 'k' right to create
unauthorized 'parent/child/child' mailboxes (CVE-2008-4578).

In addition, two bugs were discovered in the dovecot package shipped
with Mandriva Linux 2009.0. The default permissions on the
dovecot.conf configuration file were too restrictive, which prevents
the use of dovecot's 'deliver' command as a non-root user. Secondly,
dovecot should not start until after ntpd, if ntpd is active, because
if ntpd corrects the time backwards while dovecot is running, dovecot
will quit automatically, with the log message 'Time just moved
backwards by X seconds. This might cause a lot of problems, so I'll
just kill myself now.' The update resolves both these problems. The
default permissions on dovecot.conf now allow the 'deliver' command to
read the file. Note that if you edited dovecot.conf at all prior to
installing the update, the new permissions may not be applied. If you
find the 'deliver' command still does not work following the update,
please run these commands as root :

# chmod 0640 /etc/dovecot.conf # chown root:mail /etc/dovecot.conf

Dovecot's initialization script now configures it to start after the
ntpd service, to ensure ntpd resetting the clock does not interfere
with Dovecot operation.

This package corrects the above-noted bugs and security issues by
upgrading to the latest dovecot 1.1.6, which also provides additional
bug fixes."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://qa.mandriva.com/44926"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_cwe_id(264);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:dovecot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:dovecot-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:dovecot-plugins-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:dovecot-plugins-ldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2009.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/11/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK2009.0", reference:"dovecot-1.1.6-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"dovecot-devel-1.1.6-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"dovecot-plugins-gssapi-1.1.6-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"dovecot-plugins-ldap-1.1.6-0.1mdv2009.0", yank:"mdv")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(34838);
  script_version("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:39");

  script_cve_id("CVE-2008-4577", "CVE-2008-4578");
  script_bugtraq_id(31587);

  script_name(english:"FreeBSD : dovecot -- ACL plugin bypass vulnerabilities (75c24c1d-b688-11dd-88fd-001c2514716c)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Timo Sirainen reports in dovecot 1.1.4 release notes :

ACL plugin fixes: Negative rights were actually treated as positive
rights. 'k' right didn't prevent creating parent/child/child mailbox.
ACL groups weren't working."
  );
  # https://vuxml.freebsd.org/freebsd/75c24c1d-b688-11dd-88fd-001c2514716c.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f82410b5"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(264);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:dovecot");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2008/10/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2008/11/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/11/21");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"dovecot<1.1.4")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");