SUSE SLES12 Security Update : samba (SUSE-SU-2023:0081-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:0081-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(170021);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/28");

  script_cve_id(
    "CVE-2022-2031",
    "CVE-2022-3437",
    "CVE-2022-32742",
    "CVE-2022-32744",
    "CVE-2022-32745",
    "CVE-2022-32746",
    "CVE-2022-38023",
    "CVE-2022-42898"
  );
  script_xref(name:"IAVA", value:"2022-A-0299-S");
  script_xref(name:"IAVA", value:"2022-A-0447-S");
  script_xref(name:"IAVA", value:"2022-A-0495-S");
  script_xref(name:"IAVA", value:"2023-A-0004-S");
  script_xref(name:"SuSE", value:"SUSE-SU-2023:0081-1");

  script_name(english:"SUSE SLES12 Security Update : samba (SUSE-SU-2023:0081-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2023:0081-1 advisory.

  - 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)

  - A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP
    message values freed by a preceding database module, resulting in a use-after-free issue. This issue is
    only possible when modifying certain privileged attributes, such as userAccountControl. (CVE-2022-32746)

  - A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and
    unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI
    library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a
    maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the
    application, possibly resulting in a denial of service (DoS) attack. (CVE-2022-3437)

  - Netlogon RPC Elevation of Privilege Vulnerability (CVE-2022-38023)

  - PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that
    may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit
    platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other
    platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
    (CVE-2022-42898)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1200102");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1201490");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1201492");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1201493");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1201495");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1201496");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1204254");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1205126");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1206504");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-2031");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-32742");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-32744");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-32745");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-32746");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-3437");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-38023");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-42898");
  # https://lists.suse.com/pipermail/sle-security-updates/2023-January/013465.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6282d3b1");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-32745");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-42898");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/07/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ctdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libsamba-policy-python3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libsamba-policy0-python3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libsamba-policy0-python3-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-client-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-client-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-client-libs-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-ldb-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-libs-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-libs-python3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-libs-python3-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-python3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-tool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-winbind-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:samba-winbind-libs-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023 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/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12|SLES_SAP12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12 / SLES_SAP12', 'SUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES12 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP12" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP12 SP5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'libsamba-policy0-python3-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'libsamba-policy0-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-client-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-client-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-client-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-client-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-devel-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-doc-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-ldb-ldap-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-libs-python3-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-libs-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-tool-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-winbind-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-winbind-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'samba-winbind-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'ctdb-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-12.5', 'sle-ha-release-12.5', 'sles-release-12.5']},
    {'reference':'libsamba-policy0-python3-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'libsamba-policy0-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-client-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-client-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-client-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-client-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-devel-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-doc-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-ldb-ldap-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-libs-python3-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-libs-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-python3-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-tool-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-winbind-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-winbind-libs-32bit-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'samba-winbind-libs-4.15.13+git.482.1ac2c665c7-3.74.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'ctdb / libsamba-policy0-python3 / libsamba-policy0-python3-32bit / etc');
}