FreeBSD : ansible - Vault password leak from temporary file (ae2e7871-80f6-11ea-bafd-815569f3852d)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 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(135731);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/15");

  script_cve_id("CVE-2020-1740");
  script_xref(name:"IAVB", value:"2019-B-0092-S");

  script_name(english:"FreeBSD : ansible - Vault password leak from temporary file (ae2e7871-80f6-11ea-bafd-815569f3852d)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related
updates.");
  script_set_attribute(attribute:"description", value:
"Borja Tarraso reports :

A flaw was found in Ansible Engine when using Ansible Vault for
editing encrypted files. When a user executes 'ansible-vault edit',
another user on the same computer can read the old and new secret, as
it is created in a temporary file with mkstemp and the returned file
descriptor is closed and the method write_data is called to write the
existing secret in the file. This method will delete the file before
recreating it insecurely. All versions in 2.7.x, 2.8.x and 2.9.x
branches are believed to be vulnerable.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1740");
  script_set_attribute(attribute:"see_also", value:"https://github.com/ansible/ansible/issues/67798");
  # https://vuxml.freebsd.org/freebsd/ae2e7871-80f6-11ea-bafd-815569f3852d.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e8b6c02c");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1740");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible23");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible24");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible25");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible26");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ansible27");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"FreeBSD Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"ansible<2.8.9")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ansible27<2.7.17")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ansible26<2.7.17")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ansible25<2.7.17")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ansible24<2.7.17")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ansible23<2.7.17")) flag++;

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