Fedora 32 : salt (2021-904a2dbc0c)

##
# (C) Tenable Network Security, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2021-904a2dbc0c
#

include('compat.inc');

if (description)
{
  script_id(146970);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/21");

  script_cve_id(
    "CVE-2020-28243",
    "CVE-2020-28972",
    "CVE-2020-35662",
    "CVE-2021-3144",
    "CVE-2021-3148",
    "CVE-2021-3197",
    "CVE-2021-25281",
    "CVE-2021-25282",
    "CVE-2021-25283",
    "CVE-2021-25284"
  );
  script_xref(name:"FEDORA", value:"2021-904a2dbc0c");
  script_xref(name:"IAVA", value:"2021-A-0112-S");

  script_name(english:"Fedora 32 : salt (2021-904a2dbc0c)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 32 host has a package installed that is affected by multiple vulnerabilities as referenced in the
FEDORA-2021-904a2dbc0c advisory.

  - An issue was discovered in SaltStack Salt before 3002.5. The minion's restartcheck is vulnerable to
    command injection via a crafted process name. This allows for a local privilege escalation by any user
    able to create a files on the minion in a non-blacklisted directory. (CVE-2020-28243)

  - In SaltStack Salt before 3002.5, authentication to VMware vcenter, vsphere, and esxi servers (in the
    vmware.py files) does not always validate the SSL/TLS certificate. (CVE-2020-28972)

  - In SaltStack Salt before 3002.5, when authenticating to services using certain modules, the SSL
    certificate is not always validated. (CVE-2020-35662)

  - In SaltStack Salt before 3002.5, eauth tokens can be used once after expiration. (They might be used to
    run command against the salt master or minions.) (CVE-2021-3144)

  - An issue was discovered in SaltStack Salt before 3002.5. Sending crafted web requests to the Salt API can
    result in salt.utils.thin.gen_thin() command injection because of different handling of single versus
    double quotes. This is related to salt/utils/thin.py. (CVE-2021-3148)

  - An issue was discovered in SaltStack Salt before 3002.5. The salt-api's ssh client is vulnerable to a
    shell injection by including ProxyCommand in an argument, or via ssh_options provided in an API request.
    (CVE-2021-3197)

  - An issue was discovered in through SaltStack Salt before 3002.5. salt-api does not honor eauth credentials
    for the wheel_async client. Thus, an attacker can remotely run any wheel modules on the master.
    (CVE-2021-25281)

  - An issue was discovered in through SaltStack Salt before 3002.5. The salt.wheel.pillar_roots.write method
    is vulnerable to directory traversal. (CVE-2021-25282)

  - An issue was discovered in through SaltStack Salt before 3002.5. The jinja renderer does not protect
    against server side template injection attacks. (CVE-2021-25283)

  - An issue was discovered in through SaltStack Salt before 3002.5. salt.modules.cmdmod can log credentials
    to the info or error log level. (CVE-2021-25284)

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://bodhi.fedoraproject.org/updates/FEDORA-2021-904a2dbc0c");
  script_set_attribute(attribute:"solution", value:
"Update the affected salt package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3197");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'SaltStack Salt API Unauthenticated RCE through wheel_async client');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:32");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:salt");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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);
release = get_kb_item('Host/RedHat/release');
if (isnull(release) || 'Fedora' >!< release) audit(AUDIT_OS_NOT, 'Fedora');
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
os_ver = os_ver[1];
if (! preg(pattern:"^32([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Fedora 32', 'Fedora ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Fedora', cpu);

pkgs = [
    {'reference':'salt-3001.6-1.fc32', 'release':'FC32', 'rpm_spec_vers_cmp':TRUE}
];

flag = 0;
foreach package_array ( pkgs ) {
  reference = NULL;
  release = NULL;
  sp = NULL;
  cpu = NULL;
  el_string = NULL;
  rpm_spec_vers_cmp = NULL;
  epoch = NULL;
  allowmaj = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (reference && release) {
    if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'salt');
}