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nessusThis script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.ORACLELINUX_ELSA-2022-8318.NASL
HistoryNov 22, 2022 - 12:00 a.m.

Oracle Linux 9 : libldb (ELSA-2022-8318)

2022-11-2200:00:00
This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
7
oracle linux 9
libldb
elsa-2022-8318
samba ad ldap server
use-after-free
cve-2022-32746
vulnerability
nessus scanner

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

0.001 Low

EPSS

Percentile

31.7%

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2022-8318 advisory.

  • 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)

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2022-8318.
##

include('compat.inc');

if (description)
{
  script_id(168071);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/11/24");

  script_cve_id("CVE-2022-32746");

  script_name(english:"Oracle Linux 9 : libldb (ELSA-2022-8318)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2022-8318 advisory.

  - 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2022-8318.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/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:L/UI:N/S:U/C:N/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-32746");

  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:"2022/11/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/11/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ldb-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libldb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libldb-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python3-ldb");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 9', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/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, 'Oracle Linux', cpu);

var pkgs = [
    {'reference':'ldb-tools-2.5.2-1.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ldb-tools-2.5.2-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-2.5.2-1.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-2.5.2-1.el9', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-2.5.2-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-devel-2.5.2-1.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-devel-2.5.2-1.el9', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libldb-devel-2.5.2-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-ldb-2.5.2-1.el9', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-ldb-2.5.2-1.el9', 'cpu':'i686', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-ldb-2.5.2-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + 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['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && rpm_check(release:_release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, 'ldb-tools / libldb / libldb-devel / etc');
}
VendorProductVersionCPE
oraclelinux9cpe:/o:oracle:linux:9
oraclelinuxldb-toolsp-cpe:/a:oracle:linux:ldb-tools
oraclelinuxlibldbp-cpe:/a:oracle:linux:libldb
oraclelinuxlibldb-develp-cpe:/a:oracle:linux:libldb-devel
oraclelinuxpython3-ldbp-cpe:/a:oracle:linux:python3-ldb

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

0.001 Low

EPSS

Percentile

31.7%