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nessusUbuntu Security Notice (C) 2020-2023 Canonical, Inc. / NASL script (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-4622-1.NASL
HistoryNov 11, 2020 - 12:00 a.m.

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : OpenLDAP vulnerability (USN-4622-1)

2020-11-1100:00:00
Ubuntu Security Notice (C) 2020-2023 Canonical, Inc. / NASL script (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
11

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

48.7%

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by a vulnerability as referenced in the USN-4622-1 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4622-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(142735);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2020-25692");
  script_xref(name:"USN", value:"4622-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : OpenLDAP vulnerability (USN-4622-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by a
vulnerability as referenced in the USN-4622-1 advisory. 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://ubuntu.com/security/notices/USN-4622-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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-2020-25692");

  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:"2020/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ldap-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libldap-2.4-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libldap-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libldap2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:slapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:slapd-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:slapd-smbk5pwd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:slapi-dev");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2020-2023 Canonical, Inc. / NASL script (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '16.04', 'pkgname': 'ldap-utils', 'pkgver': '2.4.42+dfsg-2ubuntu3.10'},
    {'osver': '16.04', 'pkgname': 'libldap-2.4-2', 'pkgver': '2.4.42+dfsg-2ubuntu3.10'},
    {'osver': '16.04', 'pkgname': 'libldap2-dev', 'pkgver': '2.4.42+dfsg-2ubuntu3.10'},
    {'osver': '16.04', 'pkgname': 'slapd', 'pkgver': '2.4.42+dfsg-2ubuntu3.10'},
    {'osver': '16.04', 'pkgname': 'slapd-smbk5pwd', 'pkgver': '2.4.42+dfsg-2ubuntu3.10'},
    {'osver': '18.04', 'pkgname': 'ldap-utils', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '18.04', 'pkgname': 'libldap-2.4-2', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '18.04', 'pkgname': 'libldap-common', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '18.04', 'pkgname': 'libldap2-dev', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '18.04', 'pkgname': 'slapd', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '18.04', 'pkgname': 'slapd-smbk5pwd', 'pkgver': '2.4.45+dfsg-1ubuntu1.7'},
    {'osver': '20.04', 'pkgname': 'ldap-utils', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'libldap-2.4-2', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'libldap-common', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'libldap2-dev', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'slapd', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'slapd-contrib', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'slapd-smbk5pwd', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'},
    {'osver': '20.04', 'pkgname': 'slapi-dev', 'pkgver': '2.4.49+dfsg-2ubuntu1.4'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'ldap-utils / libldap-2.4-2 / libldap-common / libldap2-dev / slapd / etc');
}
VendorProductVersionCPE
canonicalubuntu_linux16.04cpe:/o:canonical:ubuntu_linux:16.04:-:lts
canonicalubuntu_linux18.04cpe:/o:canonical:ubuntu_linux:18.04:-:lts
canonicalubuntu_linux20.04cpe:/o:canonical:ubuntu_linux:20.04:-:lts
canonicalubuntu_linuxldap-utilsp-cpe:/a:canonical:ubuntu_linux:ldap-utils
canonicalubuntu_linuxlibldap-2.4-2p-cpe:/a:canonical:ubuntu_linux:libldap-2.4-2
canonicalubuntu_linuxlibldap-commonp-cpe:/a:canonical:ubuntu_linux:libldap-common
canonicalubuntu_linuxlibldap2-devp-cpe:/a:canonical:ubuntu_linux:libldap2-dev
canonicalubuntu_linuxslapdp-cpe:/a:canonical:ubuntu_linux:slapd
canonicalubuntu_linuxslapd-contribp-cpe:/a:canonical:ubuntu_linux:slapd-contrib
canonicalubuntu_linuxslapd-smbk5pwdp-cpe:/a:canonical:ubuntu_linux:slapd-smbk5pwd
Rows per page:
1-10 of 111

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

48.7%