FreeBSD : The Update Framwork -- path traversal vulnerability (85d976be-93e3-11ec-aaad-14dae9d5a9d2)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2021 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
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# 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
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# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(158246);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/06");

  script_cve_id("CVE-2021-41131");

  script_name(english:"FreeBSD : The Update Framwork -- path traversal vulnerability (85d976be-93e3-11ec-aaad-14dae9d5a9d2)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the 85d976be-93e3-11ec-aaad-14dae9d5a9d2 advisory.

  - python-tuf is a Python reference implementation of The Update Framework (TUF). In both clients
    (`tuf/client` and `tuf/ngclient`), there is a path traversal vulnerability that in the worst case can
    overwrite files ending in `.json` anywhere on the client system on a call to `get_one_valid_targetinfo()`.
    It occurs because the rolename is used to form the filename, and may contain path traversal characters (ie
    `../../name.json`). The impact is mitigated by a few facts: It only affects implementations that allow
    arbitrary rolename selection for delegated targets metadata, The attack requires the ability to A) insert
    new metadata for the path-traversing role and B) get the role delegated by an existing targets metadata,
    The written file content is heavily restricted since it needs to be a valid, signed targets file. The file
    extension is always .json. A fix is available in version 0.19 or newer. There are no workarounds that do
    not require code changes. Clients can restrict the allowed character set for rolenames, or they can store
    metadata in files named in a way that is not vulnerable: neither of these approaches is possible without
    modifying python-tuf. (CVE-2021-41131)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2021-41131");
  # https://vuxml.freebsd.org/freebsd/85d976be-93e3-11ec-aaad-14dae9d5a9d2.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c1b800d");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-41131");

  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:"2021/10/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:py310-tuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:py311-tuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:py37-tuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:py38-tuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:py39-tuf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2023 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("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);


var flag = 0;

var packages = [
    'py310-tuf<=0.18.1',
    'py311-tuf<=0.18.1',
    'py37-tuf<=0.18.1',
    'py38-tuf<=0.18.1',
    'py39-tuf<=0.18.1'
];

foreach var package( packages ) {
    if (pkg_test(save_report:TRUE, pkg: package)) flag++;
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : pkg_report_get()
  );
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");