EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-1179)

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

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

if (description)
{
  script_id(134013);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/26");

  script_cve_id("CVE-2019-14902", "CVE-2019-14907");

  script_name(english:"EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-1179)");

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

  - There is an issue in all samba 4.11.x versions before
    4.11.5, all samba 4.10.x versions before 4.10.12 and
    all samba 4.9.x versions before 4.9.18, where the
    removal of the right to create or modify a subtree
    would not automatically be taken away on all domain
    controllers.(CVE-2019-14902)

  - All samba versions 4.9.x before 4.9.18, 4.10.x before
    4.10.12 and 4.11.x before 4.11.5 have an issue where if
    it is set with 'log level = 3' (or above) then the
    string obtained from the client, after a failed
    character conversion, is printed. Such strings can be
    provided during the NTLMSSP authentication exchange. In
    the Samba AD DC in particular, this may cause a
    long-lived process(such as the RPC server) to
    terminate. (In the file server case, the most likely
    target, smbd, operates as process-per-client and so a
    crash there is harmless).(CVE-2019-14907)

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-2020-1179
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?52a5b79a");
  script_set_attribute(attribute:"solution", value:
"Update the affected samba packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/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:L/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-2019-14902");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ctdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ctdb-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsmbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python2-samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python2-samba-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-samba-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-client-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-dc-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-krb5-printing");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-pidl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-test-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind-krb5-locator");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind-modules");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  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) 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/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("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");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(8)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8", "EulerOS UVP " + uvp);

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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["ctdb-4.9.1-2.h20.eulerosv2r8",
        "ctdb-tests-4.9.1-2.h20.eulerosv2r8",
        "libsmbclient-4.9.1-2.h20.eulerosv2r8",
        "libwbclient-4.9.1-2.h20.eulerosv2r8",
        "python2-samba-4.9.1-2.h20.eulerosv2r8",
        "python2-samba-test-4.9.1-2.h20.eulerosv2r8",
        "python3-samba-4.9.1-2.h20.eulerosv2r8",
        "python3-samba-test-4.9.1-2.h20.eulerosv2r8",
        "samba-4.9.1-2.h20.eulerosv2r8",
        "samba-client-4.9.1-2.h20.eulerosv2r8",
        "samba-client-libs-4.9.1-2.h20.eulerosv2r8",
        "samba-common-4.9.1-2.h20.eulerosv2r8",
        "samba-common-libs-4.9.1-2.h20.eulerosv2r8",
        "samba-common-tools-4.9.1-2.h20.eulerosv2r8",
        "samba-dc-libs-4.9.1-2.h20.eulerosv2r8",
        "samba-krb5-printing-4.9.1-2.h20.eulerosv2r8",
        "samba-libs-4.9.1-2.h20.eulerosv2r8",
        "samba-pidl-4.9.1-2.h20.eulerosv2r8",
        "samba-test-4.9.1-2.h20.eulerosv2r8",
        "samba-test-libs-4.9.1-2.h20.eulerosv2r8",
        "samba-winbind-4.9.1-2.h20.eulerosv2r8",
        "samba-winbind-clients-4.9.1-2.h20.eulerosv2r8",
        "samba-winbind-krb5-locator-4.9.1-2.h20.eulerosv2r8",
        "samba-winbind-modules-4.9.1-2.h20.eulerosv2r8"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"8", 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, "samba");
}