Vulnerabilities > CVE-2017-16921 - OS Command Injection vulnerability in multiple products

#
# (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(105503);
  script_version("3.5");
  script_cvs_date("Date: 2019/04/05 23:25:06");

  script_cve_id("CVE-2017-16664", "CVE-2017-16854", "CVE-2017-16921");

  script_name(english:"FreeBSD : OTRS -- Multiple vulnerabilities (cebd05d6-ed7b-11e7-95f2-005056925db4)");
  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:
"OTRS reports :

An attacker who is logged into OTRS as an agent can request special
URLs from OTRS which can lead to the execution of shell commands with
the permissions of the web server user.

An attacker who is logged into OTRS as a customer can use the ticket
search form to disclose internal article information of their customer
tickets.

An attacker who is logged into OTRS as an agent can manipulate form
parameters and execute arbitrary shell commands with the permissions
of the OTRS or web server user.

An attacker can send a specially prepared email to an OTRS system. If
this system has cookie support disabled, and a logged in agent clicks
a link in this email, the session information could be leaked to
external systems, allowing the attacker to take over the agent's
session."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224729"
  );
  # https://www.otrs.com/security-advisory-2017-07-security-update-otrs-framework/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?beea29c5"
  );
  # https://www.otrs.com/security-advisory-2017-08-security-update-otrs-framework/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0c1c4eb3"
  );
  # https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?18e3a5f8"
  );
  # https://www.otrs.com/security-advisory-2017-10-security-update-otrs-framework/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?6e7e98e6"
  );
  # https://vuxml.freebsd.org/freebsd/cebd05d6-ed7b-11e7-95f2-005056925db4.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?36865b73"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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:"otrs<5.0.26")) flag++;

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

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4066. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105330);
  script_version("3.6");
  script_cvs_date("Date: 2019/04/10 16:10:16");

  script_cve_id("CVE-2017-16854", "CVE-2017-16921");
  script_xref(name:"DSA", value:"4066");

  script_name(english:"Debian DSA-4066-1 : otrs2 - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two vulnerabilities were discovered in the Open Ticket Request System
which could result in information disclosure or the execution of
arbitrary shell commands by logged-in agents."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/otrs2"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/otrs2"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/otrs2"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2017/dsa-4066"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the otrs2 packages.

For the oldstable distribution (jessie), these problems have been
fixed in version 3.3.18-1+deb8u3.

For the stable distribution (stretch), these problems have been fixed
in version 5.0.16-1+deb9u4."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:otrs2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"otrs", reference:"3.3.18-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"otrs2", reference:"3.3.18-1+deb8u3")) flag++;
if (deb_check(release:"9.0", prefix:"otrs", reference:"5.0.16-1+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"otrs2", reference:"5.0.16-1+deb9u4")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(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 Debian Security Advisory DLA-1212-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105378);
  script_version("3.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2017-15864", "CVE-2017-16664", "CVE-2017-16854", "CVE-2017-16921");

  script_name(english:"Debian DLA-1212-1 : otrs2 security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Four vulnerabilities were discovered in the Open Ticket Request System
which could result in information disclosure or the execution of
arbitrary shell commands by logged-in agents.

For Debian 7 'Wheezy', these problems have been fixed in version
3.3.18-1~deb7u2.

We recommend that you upgrade your otrs2 packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/otrs2"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected otrs, and otrs2 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:otrs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:otrs2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"otrs", reference:"3.3.18-1~deb7u2")) flag++;
if (deb_check(release:"7.0", prefix:"otrs2", reference:"3.3.18-1~deb7u2")) flag++;

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

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(122156);
  script_version("1.2");
  script_cvs_date("Date: 2019/04/02 21:54:16");

  script_cve_id("CVE-2017-16921");

  script_name(english:"OTRS Authenticated Remote Code Execution (OSA-2017-09)");
  script_summary(english:"Checks the product version.");

  script_set_attribute(attribute:"synopsis", value:
"A service management application running on the remote host is affected by
a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of OTRS running on the remote host is 4.0.x prior to 
4.0.27, 5.0.x prior to 5.0.25, or 6.0.x prior to 6.0.2. It is, 
therefore, affected by a remote code execution vulnerability due to
improper validation of user-supplied data. An authenticated, remote
attacker can manipulate form parameters and execute arbitrary shell
commands with the permissions of the OTRS or web server user.");
  # https://community.otrs.com/security-advisory-2017-09-security-update-otrs-framework/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e19d6550");
  script_set_attribute(attribute:"solution", value:
"Upgrade to OTRS version 4.0.27 / 5.0.25 / 6.0.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-16921");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/14");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:otrs:otrs");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("otrs_detect.nbin");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("vcf.inc");

port = get_http_port(default:80);
app = vcf::get_app_info(app:"OTRS Web", webapp:TRUE, port:port);
if (app.version !~ "^[456]\.0")
{
  exit(0, 'The version of ' + app.app + ' listening at ' +
    build_url(port:app.port, qs:app.path) + ' is not 4.0.x, 5.0.x, or 6.0.x.');
}

constraints =
[
  {"min_version" : "4.0.0", "fixed_version" : "4.0.27"},
  {"min_version" : "5.0.0", "fixed_version" : "5.0.25"},
  {"min_version" : "6.0.0", "fixed_version" : "6.0.2"},
];

vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);