EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-1882)

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

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

if (description)
{
  script_id(139985);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/22");

  script_cve_id("CVE-2020-10704");

  script_name(english:"EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-1882)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the samba packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerability :

  - A flaw was found when using samba as an Active
    Directory Domain Controller. Due to the way samba
    handles certain requests as an Active Directory Domain
    Controller LDAP server, an unauthorized user can cause
    a stack overflow leading to a denial of service. The
    highest threat from this vulnerability is to system
    availability. This issue affects all samba versions
    before 4.10.15, before 4.11.8 and before
    4.12.2.(CVE-2020-10704)

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-2020-1882
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3344253e");
  script_set_attribute(attribute:"solution", value:
"Update the affected samba package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/UI:N/S:U/C:N/I:N/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-2020-10704");

  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:"2020/08/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/08/28");

  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.h24.eulerosv2r8",
        "ctdb-tests-4.9.1-2.h24.eulerosv2r8",
        "libsmbclient-4.9.1-2.h24.eulerosv2r8",
        "libwbclient-4.9.1-2.h24.eulerosv2r8",
        "python2-samba-4.9.1-2.h24.eulerosv2r8",
        "python2-samba-test-4.9.1-2.h24.eulerosv2r8",
        "python3-samba-4.9.1-2.h24.eulerosv2r8",
        "python3-samba-test-4.9.1-2.h24.eulerosv2r8",
        "samba-4.9.1-2.h24.eulerosv2r8",
        "samba-client-4.9.1-2.h24.eulerosv2r8",
        "samba-client-libs-4.9.1-2.h24.eulerosv2r8",
        "samba-common-4.9.1-2.h24.eulerosv2r8",
        "samba-common-libs-4.9.1-2.h24.eulerosv2r8",
        "samba-common-tools-4.9.1-2.h24.eulerosv2r8",
        "samba-dc-libs-4.9.1-2.h24.eulerosv2r8",
        "samba-krb5-printing-4.9.1-2.h24.eulerosv2r8",
        "samba-libs-4.9.1-2.h24.eulerosv2r8",
        "samba-pidl-4.9.1-2.h24.eulerosv2r8",
        "samba-test-4.9.1-2.h24.eulerosv2r8",
        "samba-test-libs-4.9.1-2.h24.eulerosv2r8",
        "samba-winbind-4.9.1-2.h24.eulerosv2r8",
        "samba-winbind-clients-4.9.1-2.h24.eulerosv2r8",
        "samba-winbind-krb5-locator-4.9.1-2.h24.eulerosv2r8",
        "samba-winbind-modules-4.9.1-2.h24.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");
}