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nessusThis script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_SEP_5005613.NASL
HistorySep 14, 2021 - 12:00 a.m.

KB5005627: Windows 8.1 and Windows Server 2012 R2 September 2021 Security Update

2021-09-1400:00:00
This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
116

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

LOW

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

AI Score

9.2

Confidence

Low

EPSS

0.969

Percentile

99.7%

The remote Windows host is missing security update 5005627 or cumulative update 5005613. It is, therefore, affected by multiple vulnerabilities :

  • An memory corruption vulnerability exists. An attacker can exploit this to corrupt the memory and cause unexpected behaviors within the system/application.
    (CVE-2021-26435)

  • An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-36960, CVE-2021-36962, CVE-2021-36969, CVE-2021-36972, CVE-2021-38629, CVE-2021-38635, CVE-2021-38636)

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-36965, CVE-2021-36958, CVE-2021-40444)

  • An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
    (CVE-2021-36955, CVE-2021-36963, CVE-2021-36964, CVE-2021-36974, CVE-2021-38628, CVE-2021-38630, CVE-2021-38633, CVE-2021-38638, CVE-2021-38639, CVE-2021-38667, CVE-2021-38671, CVE-2021-40447)

  • A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-36961)

  • 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-2021-38624)

  • A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-36959)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#

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

if (description)
{
  script_id(153375);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");

  script_cve_id(
    "CVE-2021-26435",
    "CVE-2021-36955",
    "CVE-2021-36958",
    "CVE-2021-36959",
    "CVE-2021-36960",
    "CVE-2021-36961",
    "CVE-2021-36962",
    "CVE-2021-36963",
    "CVE-2021-36964",
    "CVE-2021-36965",
    "CVE-2021-36969",
    "CVE-2021-36972",
    "CVE-2021-36974",
    "CVE-2021-38624",
    "CVE-2021-38628",
    "CVE-2021-38629",
    "CVE-2021-38630",
    "CVE-2021-38633",
    "CVE-2021-38635",
    "CVE-2021-38636",
    "CVE-2021-38638",
    "CVE-2021-38639",
    "CVE-2021-38667",
    "CVE-2021-38671",
    "CVE-2021-40444",
    "CVE-2021-40447"
  );
  script_xref(name:"IAVA", value:"2021-A-0429-S");
  script_xref(name:"IAVA", value:"2021-A-0431-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
  script_xref(name:"MSKB", value:"5005613");
  script_xref(name:"MSKB", value:"5005627");
  script_xref(name:"MSFT", value:"MS21-5005613");
  script_xref(name:"MSFT", value:"MS21-5005627");

  script_name(english:"KB5005627: Windows 8.1 and Windows Server 2012 R2 September 2021 Security Update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 5005627
or cumulative update 5005613. It is, therefore, affected by
multiple vulnerabilities :

  - An memory corruption vulnerability exists. An attacker
    can exploit this to corrupt the memory and cause
    unexpected behaviors within the system/application.
    (CVE-2021-26435)

  - An information disclosure vulnerability. An attacker can
    exploit this to disclose potentially sensitive
    information. (CVE-2021-36960, CVE-2021-36962,
    CVE-2021-36969, CVE-2021-36972, CVE-2021-38629,
    CVE-2021-38635, CVE-2021-38636)

  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-36965, 
    CVE-2021-36958, CVE-2021-40444)

  - An elevation of privilege vulnerability. An attacker can
    exploit this to gain elevated privileges.
    (CVE-2021-36955, CVE-2021-36963, CVE-2021-36964,
    CVE-2021-36974, CVE-2021-38628, CVE-2021-38630,
    CVE-2021-38633, CVE-2021-38638, CVE-2021-38639,
    CVE-2021-38667, CVE-2021-38671, CVE-2021-40447)

  - A denial of service (DoS) vulnerability. An attacker can
    exploit this issue to cause the affected component to
    deny system or application services. (CVE-2021-36961)

  - 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-2021-38624)

  - A session spoofing vulnerability exists. An attacker can
    exploit this to perform actions with the privileges of
    another user. (CVE-2021-36959)");
  # https://support.microsoft.com/en-us/topic/september-14-2021-kb5005627-security-only-update-3404d598-7d6e-4007-93e8-49438460791f
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c74eba5d");
  # https://support.microsoft.com/en-us/topic/september-14-2021-kb5005613-monthly-rollup-47b217aa-8d33-4b29-b444-77fcbe57410b
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f099b11d");
  script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB5005627 or Cumulative Update KB5005613.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-36958");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-40444");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Office Word Malicious MSHTML RCE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/09/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_server_2012:r2");
  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) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_check_rollup.nasl", "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('audit.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_hotfixes.inc');
include('smb_func.inc');
include('misc_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = "MS21-09";
kbs = make_list('5005627', '5005613');

if (get_kb_item('Host/patch_management_checks')) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit('SMB/Registry/Enumerated');
get_kb_item_or_exit('SMB/WindowsVersion', exit_code:1);

if (hotfix_check_sp_range(win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# Windows 8 EOL
productname = get_kb_item_or_exit('SMB/ProductName', exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
  audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  smb_check_rollup(os:"6.3",
                   sp:0,
                   rollup_date:'09_2021',
                   bulletin:bulletin,
                   rollup_kb_list:[5005627, 5005613])
)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
VendorProductVersionCPE
microsoftwindows_8cpe:/o:microsoft:windows_8
microsoftwindows_server_2012r2cpe:/o:microsoft:windows_server_2012:r2

References

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

LOW

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

AI Score

9.2

Confidence

Low

EPSS

0.969

Percentile

99.7%