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nessusThis script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS23_JUL_OFFICE_SHAREPOINT_2019.NASL
HistoryJul 11, 2023 - 12:00 a.m.

Security Updates for Microsoft SharePoint Server 2019 (July 2023)

2023-07-1100:00:00
This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
16
microsoft sharepoint server 2019
security updates
vulnerabilities
bypass vulnerability
session spoofing
remote code execution

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.4

Confidence

Low

EPSS

0.008

Percentile

81.4%

The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  • A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
    (CVE-2023-33165)
  • A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2023-33159)
  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2023-33134, CVE-2023-33157, CVE-2023-33160)
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
##

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

if (description)
{
  script_id(178167);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/06");

  script_cve_id(
    "CVE-2023-33134",
    "CVE-2023-33157",
    "CVE-2023-33159",
    "CVE-2023-33160",
    "CVE-2023-33165"
  );
  script_xref(name:"MSKB", value:"5002423");
  script_xref(name:"MSFT", value:"MS23-5002423");
  script_xref(name:"IAVA", value:"2023-A-0342-S");

  script_name(english:"Security Updates for Microsoft SharePoint Server 2019 (July 2023)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft SharePoint Server 2019 installation on the remote host is missing a security update");
  script_set_attribute(attribute:"description", value:
"The Microsoft SharePoint Server 2019 installation on the remote host is 
missing security updates. It is, therefore,
affected by multiple vulnerabilities:
  - A security feature bypass vulnerability exists. An
    attacker can exploit this and bypass the security
    feature and perform unauthorized actions compromising
    the integrity of the system/application.
    (CVE-2023-33165)
  - A session spoofing vulnerability exists. An attacker can
    exploit this to perform actions with the privileges of
    another user. (CVE-2023-33159)
  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2023-33134,
    CVE-2023-33157, CVE-2023-33160)");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/5002423");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released KB5002423 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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-2023-33159");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-33160");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/07/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/07/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server:2019");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_sharepoint_installed.nbin", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('vcf_extras_microsoft.inc');

var app_info = vcf::microsoft::sharepoint::get_app_info();
var kb_checks = 
[
  {
    'product'      : '2019',
    'edition'      : 'Server',
    'kb'           : '5002423',
    'path'         : app_info.path,
    'version'      : '16.0.10400.20008',
    'append'       : 'bin',
    'file'         : 'ascalc.dll',
    'product_name' : 'Microsoft SharePoint Enterprise Server 2019'
  }
];
vcf::microsoft::sharepoint::check_version_and_report
(
  app_info:app_info, 
  bulletin:'MS23-06',
  constraints:kb_checks, 
  severity:SECURITY_HOLE
);

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.4

Confidence

Low

EPSS

0.008

Percentile

81.4%