NewStart CGSL CORE 5.05 / MAIN 5.05 : bind Vulnerability (NS-SA-2019-0232)

2019-12-31T00:00:00
ID NEWSTART_CGSL_NS-SA-2019-0232_BIND.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-09-02T00:00:00

Description

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has bind packages installed that are affected by a vulnerability:

  • To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request. Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM at that time incorrectly described the behavior of two rule types, krb5-subdomain and ms-subdomain. This incorrect documentation could mislead operators into believing that policies they had configured were more restrictive than they actually were. This affects BIND versions prior to BIND 9.11.5 and BIND 9.12.3. (CVE-2018-5741)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

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


# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0232. The text
# itself is copyright (C) ZTE, Inc.


include('compat.inc');

if (description)
{
  script_id(132476);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2018-5741");
  script_bugtraq_id(105379);

  script_name(english:"NewStart CGSL CORE 5.05 / MAIN 5.05 : bind Vulnerability (NS-SA-2019-0232)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has bind packages installed that are affected by a
vulnerability:

  - To provide fine-grained controls over the ability to use
    Dynamic DNS (DDNS) to update records in a zone, BIND 9
    provides a feature called update-policy. Various rules
    can be configured to limit the types of updates that can
    be performed by a client, depending on the key used when
    sending the update request. Unfortunately, some rule
    types were not initially documented, and when
    documentation for them was added to the Administrator
    Reference Manual (ARM) in change #3112, the language
    that was added to the ARM at that time incorrectly
    described the behavior of two rule types, krb5-subdomain
    and ms-subdomain. This incorrect documentation could
    mislead operators into believing that policies they had
    configured were more restrictive than they actually
    were. This affects BIND versions prior to BIND 9.11.5
    and BIND 9.12.3. (CVE-2018-5741)

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:"http://security.gd-linux.com/notice/NS-SA-2019-0232");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL bind packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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-2018-5741");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.05" &&
    release !~ "CGSL MAIN 5.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.05 / NewStart CGSL MAIN 5.05');

if (!get_kb_item("Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.05": [
    "bind-9.11.4-9.P2.el7",
    "bind-chroot-9.11.4-9.P2.el7",
    "bind-debuginfo-9.11.4-9.P2.el7",
    "bind-devel-9.11.4-9.P2.el7",
    "bind-export-devel-9.11.4-9.P2.el7",
    "bind-export-libs-9.11.4-9.P2.el7",
    "bind-libs-9.11.4-9.P2.el7",
    "bind-libs-lite-9.11.4-9.P2.el7",
    "bind-license-9.11.4-9.P2.el7",
    "bind-lite-devel-9.11.4-9.P2.el7",
    "bind-pkcs11-9.11.4-9.P2.el7",
    "bind-pkcs11-devel-9.11.4-9.P2.el7",
    "bind-pkcs11-libs-9.11.4-9.P2.el7",
    "bind-pkcs11-utils-9.11.4-9.P2.el7",
    "bind-sdb-9.11.4-9.P2.el7",
    "bind-sdb-chroot-9.11.4-9.P2.el7",
    "bind-utils-9.11.4-9.P2.el7"
  ],
  "CGSL MAIN 5.05": [
    "bind-9.11.4-9.P2.el7",
    "bind-chroot-9.11.4-9.P2.el7",
    "bind-debuginfo-9.11.4-9.P2.el7",
    "bind-devel-9.11.4-9.P2.el7",
    "bind-export-devel-9.11.4-9.P2.el7",
    "bind-export-libs-9.11.4-9.P2.el7",
    "bind-libs-9.11.4-9.P2.el7",
    "bind-libs-lite-9.11.4-9.P2.el7",
    "bind-license-9.11.4-9.P2.el7",
    "bind-lite-devel-9.11.4-9.P2.el7",
    "bind-pkcs11-9.11.4-9.P2.el7",
    "bind-pkcs11-devel-9.11.4-9.P2.el7",
    "bind-pkcs11-libs-9.11.4-9.P2.el7",
    "bind-pkcs11-utils-9.11.4-9.P2.el7",
    "bind-sdb-9.11.4-9.P2.el7",
    "bind-sdb-chroot-9.11.4-9.P2.el7",
    "bind-utils-9.11.4-9.P2.el7"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "bind");
}