KB5005030: Windows 10 Version 1809 and Windows Server 2019 Security Update (August 2021). Multiple vulnerabilities including remote code execution, session spoofing, elevation of privilege, memory corruption and information disclosure
#%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(152435);
script_version("1.12");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");
script_cve_id(
"CVE-2021-26424",
"CVE-2021-26425",
"CVE-2021-26426",
"CVE-2021-26432",
"CVE-2021-26433",
"CVE-2021-34480",
"CVE-2021-34481",
"CVE-2021-34483",
"CVE-2021-34484",
"CVE-2021-34486",
"CVE-2021-34487",
"CVE-2021-34530",
"CVE-2021-34533",
"CVE-2021-34534",
"CVE-2021-34535",
"CVE-2021-34536",
"CVE-2021-34537",
"CVE-2021-36926",
"CVE-2021-36932",
"CVE-2021-36933",
"CVE-2021-36936",
"CVE-2021-36937",
"CVE-2021-36938",
"CVE-2021-36942",
"CVE-2021-36947",
"CVE-2021-36948"
);
script_xref(name:"MSKB", value:"5005030");
script_xref(name:"MSFT", value:"MS21-5005030");
script_xref(name:"IAVA", value:"2021-A-0373-S");
script_xref(name:"IAVA", value:"2021-A-0374-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/18");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/21");
script_name(english:"KB5005030: Windows 10 Version 1809 and Windows Server 2019 Security Update (August 2021)");
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 5005030.
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-2021-26424,
CVE-2021-26432, CVE-2021-34530, CVE-2021-34533,
CVE-2021-34534, CVE-2021-34535, CVE-2021-36936,
CVE-2021-36937, CVE-2021-36947)
- A session spoofing vulnerability exists. An attacker can
exploit this to perform actions with the privileges of
another user. (CVE-2021-36942)
- An elevation of privilege vulnerability. An attacker can
exploit this to gain elevated privileges.
(CVE-2021-26425, CVE-2021-26426, CVE-2021-34483,
CVE-2021-34484, CVE-2021-34486, CVE-2021-34487,
CVE-2021-34536, CVE-2021-34537, CVE-2021-36948)
- An memory corruption vulnerability exists. An attacker
can exploit this to corrupt the memory and cause
unexpected behaviors within the system/application.
(CVE-2021-34480)
- An information disclosure vulnerability. An attacker can
exploit this to disclose potentially sensitive
information. (CVE-2021-26433, CVE-2021-36926,
CVE-2021-36932, CVE-2021-36933, CVE-2021-36938)");
# https://support.microsoft.com/en-us/topic/august-10-2021-kb5005030-os-build-17763-2114-cec503ed-cc09-4641-bdc1-988153e0bd9a
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?34b43ea5");
script_set_attribute(attribute:"solution", value:
"Apply Cumulative Update KB5005030.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
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:L/UI:N/S:C/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-2021-36936");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-26424");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/08/10");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_10_1809");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_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) 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 = 'MS21-08';
kbs = make_list(
'5005030'
);
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(win10:'0') <= 0) 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:'10',
sp:0,
os_build:17763,
rollup_date:'08_2021',
bulletin:bulletin,
rollup_kb_list:[5005030])
)
{
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());
}
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