EulerOS 2.0 SP8 : samba (EulerOS-SA-2022-2480)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(165847);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/01");

  script_cve_id(
    "CVE-2022-2031",
    "CVE-2022-32742",
    "CVE-2022-32744",
    "CVE-2022-32745"
  );
  script_xref(name:"IAVA", value:"2022-A-0299-S");

  script_name(english:"EulerOS 2.0 SP8 : samba (EulerOS-SA-2022-2480)");

  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 :

  - A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a
    single account and set of keys, allowing them to decrypt each other's tickets. A user who has been
    requested to change their password, can exploit this flaw to obtain and use tickets to other services.
    (CVE-2022-2031)

  - A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client
    had sent enough data to fulfill the write, allowing server memory contents to be written into the file (or
    printer) instead of client-supplied data. The client cannot control the area of the server memory written
    to the file (or printer). (CVE-2022-32742)

  - A flaw was found in Samba. The KDC accepts kpasswd requests encrypted with any key known to it. By
    encrypting forged kpasswd requests with its own key, a user can change other users' passwords, enabling
    full domain takeover. (CVE-2022-32744)

  - A flaw was found in Samba. Samba AD users can cause the server to access uninitialized data with an LDAP
    add or modify the request, usually resulting in a segmentation fault. (CVE-2022-32745)

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-2022-2480
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?599f0b50");
  script_set_attribute(attribute:"solution", value:
"Update the affected samba packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C");
  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:H/I:H/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-2022-32745");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-32744");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/07/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/09");

  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:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 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/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");

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

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);

var 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);

var flag = 0;

var pkgs = [
  "ctdb-4.9.1-2.h39.eulerosv2r8",
  "ctdb-tests-4.9.1-2.h39.eulerosv2r8",
  "libsmbclient-4.9.1-2.h39.eulerosv2r8",
  "libwbclient-4.9.1-2.h39.eulerosv2r8",
  "python2-samba-4.9.1-2.h39.eulerosv2r8",
  "python2-samba-test-4.9.1-2.h39.eulerosv2r8",
  "python3-samba-4.9.1-2.h39.eulerosv2r8",
  "python3-samba-test-4.9.1-2.h39.eulerosv2r8",
  "samba-4.9.1-2.h39.eulerosv2r8",
  "samba-client-4.9.1-2.h39.eulerosv2r8",
  "samba-client-libs-4.9.1-2.h39.eulerosv2r8",
  "samba-common-4.9.1-2.h39.eulerosv2r8",
  "samba-common-libs-4.9.1-2.h39.eulerosv2r8",
  "samba-common-tools-4.9.1-2.h39.eulerosv2r8",
  "samba-dc-libs-4.9.1-2.h39.eulerosv2r8",
  "samba-krb5-printing-4.9.1-2.h39.eulerosv2r8",
  "samba-libs-4.9.1-2.h39.eulerosv2r8",
  "samba-pidl-4.9.1-2.h39.eulerosv2r8",
  "samba-test-4.9.1-2.h39.eulerosv2r8",
  "samba-test-libs-4.9.1-2.h39.eulerosv2r8",
  "samba-winbind-4.9.1-2.h39.eulerosv2r8",
  "samba-winbind-clients-4.9.1-2.h39.eulerosv2r8",
  "samba-winbind-krb5-locator-4.9.1-2.h39.eulerosv2r8",
  "samba-winbind-modules-4.9.1-2.h39.eulerosv2r8"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"8", reference:pkg)) flag++;

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