EulerOS Virtualization 2.9.0 : bind (EulerOS-SA-2021-1647)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(147674);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/20");

  script_cve_id(
    "CVE-2020-8622",
    "CVE-2020-8623",
    "CVE-2020-8624"
  );

  script_name(english:"EulerOS Virtualization 2.9.0 : bind (EulerOS-SA-2021-1647)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the bind packages installed, the EulerOS
Virtualization installation on the remote host is affected by the
following vulnerabilities :

  - In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 ->
    9.11.21, 9.12.1 -> 9.16.5, 9.17.0 -> 9.17.3, also
    affects 9.9.12-S1 -> 9.9.13-S1, 9.11.3-S1 -> 9.11.21-S1
    of the BIND 9 Supported Preview Edition, An attacker
    who has been granted privileges to change a specific
    subset of the zone's content could abuse these
    unintended additional privileges to update other
    contents of the zone.(CVE-2020-8624)

  - In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 ->
    9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the
    BIND 9 Supported Preview Edition, An attacker that can
    reach a vulnerable system with a specially crafted
    query packet can trigger a crash. To be vulnerable, the
    system must: * be running BIND that was built with
    '--enable-native-pkcs11' * be signing one or more zones
    with an RSA key * be able to receive queries from a
    possible attacker(CVE-2020-8623)

  - In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 ->
    9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND
    9 Supported Preview Edition, An attacker on the network
    path for a TSIG-signed request, or operating the server
    receiving the TSIG-signed request, could send a
    truncated response to that request, triggering an
    assertion failure, causing the server to exit.
    Alternately, an off-path attacker would have to
    correctly guess when a TSIG-signed request was sent,
    along with other characteristics of the packet and
    message, and spoof a truncated response to trigger an
    assertion failure, causing the server to
    exit.(CVE-2020-8622)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-1647
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?84336c96");
  script_set_attribute(attribute:"solution", value:
"Update the affected bind packages.");
  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:L/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-2020-8624");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-chroot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-export-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-libs-lite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-pkcs11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bind-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-bind");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.9.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

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

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

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.9.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.9.0");
if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["bind-9.11.4-17.h7.eulerosv2r9",
        "bind-chroot-9.11.4-17.h7.eulerosv2r9",
        "bind-export-libs-9.11.4-17.h7.eulerosv2r9",
        "bind-libs-9.11.4-17.h7.eulerosv2r9",
        "bind-libs-lite-9.11.4-17.h7.eulerosv2r9",
        "bind-pkcs11-9.11.4-17.h7.eulerosv2r9",
        "bind-utils-9.11.4-17.h7.eulerosv2r9",
        "python3-bind-9.11.4-17.h7.eulerosv2r9"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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");
}