CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.2%
The remote Windows host is missing security update 5000853 or cumulative update 5000848. It is, therefore, affected by multiple vulnerabilities :
A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-26861, CVE-2021-26877, CVE-2021-26881, CVE-2021-26893, CVE-2021-26894, CVE-2021-26895, CVE-2021-26897)
An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-1640, CVE-2021-26862, CVE-2021-26868, CVE-2021-26872, CVE-2021-26873, CVE-2021-26875, CVE-2021-26878, CVE-2021-26882, CVE-2021-26898, CVE-2021-26899, CVE-2021-26901, CVE-2021-27077)
A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-26879, CVE-2021-26886, CVE-2021-26896, CVE-2021-27063)
An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-24107, CVE-2021-26869, CVE-2021-26884)
An memory corruption vulnerability exists. An attacker can exploit this to corrupt the memory and cause unexpected behaviors within the system/application.
(CVE-2021-26411)
#
# (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('compat.inc');
if (description)
{
script_id(147229);
script_version("1.12");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");
script_cve_id(
"CVE-2021-1640",
"CVE-2021-24107",
"CVE-2021-26411",
"CVE-2021-26861",
"CVE-2021-26862",
"CVE-2021-26868",
"CVE-2021-26869",
"CVE-2021-26872",
"CVE-2021-26873",
"CVE-2021-26875",
"CVE-2021-26877",
"CVE-2021-26878",
"CVE-2021-26879",
"CVE-2021-26881",
"CVE-2021-26882",
"CVE-2021-26884",
"CVE-2021-26886",
"CVE-2021-26893",
"CVE-2021-26894",
"CVE-2021-26895",
"CVE-2021-26896",
"CVE-2021-26897",
"CVE-2021-26898",
"CVE-2021-26899",
"CVE-2021-26901",
"CVE-2021-27063",
"CVE-2021-27077"
);
script_xref(name:"MSKB", value:"5000848");
script_xref(name:"MSKB", value:"5000853");
script_xref(name:"MSFT", value:"MS21-5000848");
script_xref(name:"MSFT", value:"MS21-5000853");
script_xref(name:"IAVA", value:"2021-A-0130-S");
script_xref(name:"IAVA", value:"2021-A-0134-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
script_xref(name:"CEA-ID", value:"CEA-2021-0015");
script_name(english:"KB5000853: Windows 8.1 and Windows Server 2012 R2 March 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 5000853
or cumulative update 5000848. It is, therefore, affected by
multiple vulnerabilities :
- A remote code execution vulnerability. An attacker can
exploit this to bypass authentication and execute
unauthorized arbitrary commands. (CVE-2021-26861,
CVE-2021-26877, CVE-2021-26881, CVE-2021-26893,
CVE-2021-26894, CVE-2021-26895, CVE-2021-26897)
- An elevation of privilege vulnerability. An attacker can
exploit this to gain elevated privileges.
(CVE-2021-1640, CVE-2021-26862, CVE-2021-26868,
CVE-2021-26872, CVE-2021-26873, CVE-2021-26875,
CVE-2021-26878, CVE-2021-26882, CVE-2021-26898,
CVE-2021-26899, CVE-2021-26901, CVE-2021-27077)
- A denial of service (DoS) vulnerability. An attacker can
exploit this issue to cause the affected component to
deny system or application services. (CVE-2021-26879,
CVE-2021-26886, CVE-2021-26896, CVE-2021-27063)
- An information disclosure vulnerability. An attacker can
exploit this to disclose potentially sensitive
information. (CVE-2021-24107, CVE-2021-26869,
CVE-2021-26884)
- An memory corruption vulnerability exists. An attacker
can exploit this to corrupt the memory and cause
unexpected behaviors within the system/application.
(CVE-2021-26411)");
# https://support.microsoft.com/en-us/topic/march-9-2021-kb5000853-security-only-update-8dac9fb9-dbc9-4484-8e56-df5492d20808
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?be16b68e");
# https://support.microsoft.com/en-us/topic/march-9-2021-kb5000848-monthly-rollup-52f23db9-e1b0-4829-81b9-198fc82891a3
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5ff1e9b3");
script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB5000853 or Cumulative Update KB5000848.");
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:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-26897");
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:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/08");
script_set_attribute(attribute:"patch_publication_date", value:"2021/03/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/09");
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('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');
bulletin = 'MS21-03';
kbs = make_list(
'5000848',
'5000853'
);
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:'03_2021',
bulletin:bulletin,
rollup_kb_list:[5000848, 5000853])
)
{
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());
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1640
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24107
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26411
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26861
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26862
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26868
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26869
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26872
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26873
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26875
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26877
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26878
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26879
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26881
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26882
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26884
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26886
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26893
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26894
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26895
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26896
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26897
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26898
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26899
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26901
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27063
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27077
www.nessus.org/u?5ff1e9b3
www.nessus.org/u?be16b68e
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.2%