6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.045 Low
EPSS
Percentile
92.5%
The Windows ‘HEVC Video Extensions’ or ‘HEVC from Device Manufacturer’ app installed on the remote host is affected by multiple remote code execution vulnerabilities. Remote code execution vulnerabilities exists in the Microsoft Windows Codecs Library HEVC Extension. An attacker who successfully exploited the vulnerabilities could execute arbitrary code. Exploitation of the vulnerabilities requires that a program process a specially crafted file.
#%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(151589);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/27");
script_cve_id(
"CVE-2021-31947",
"CVE-2021-33775",
"CVE-2021-33776",
"CVE-2021-33777",
"CVE-2021-33778"
);
script_xref(name:"IAVA", value:"2021-A-0318-S");
script_name(english:"Microsoft Windows HEVC Codecs Library Multiple Vulnerabilities (July 2021)");
script_set_attribute(attribute:"synopsis", value:
"The Windows app installed on the remote host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The Windows 'HEVC Video Extensions' or 'HEVC from Device Manufacturer' app
installed on the remote host is affected by multiple remote code execution
vulnerabilities. Remote code execution vulnerabilities exists in the Microsoft
Windows Codecs Library HEVC Extension. An attacker who successfully exploited
the vulnerabilities could execute arbitrary code. Exploitation of the
vulnerabilities requires that a program process a specially crafted file.");
# https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31947
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4078abde");
# https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33775
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?800157d3");
# https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33776
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fdb9707d");
# https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33777
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?073f382b");
# https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33778
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?794ab155");
script_set_attribute(attribute:"solution", value:
"Upgrade to app version 1.0.41483.0, 1.0.41531.0, or later via the Microsoft Store.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-33778");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/13");
script_set_attribute(attribute:"patch_publication_date", value:"2021/07/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("smb_hotfixes.nasl", "wmi_enum_windows_app_store.nbin");
script_require_keys("SMB/Registry/Enumerated", "WMI/Windows App Store/Enumerated");
script_require_ports(139, 445);
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
# Thanks to MS for two nearly identical package identity names:
# Microsoft.HEVCVideoExtension - HEVC Video Extensions from Device Manufacturer
# Microsoft.HEVCVideoExtensions - HEVC Video Extensions
var apps = ['Microsoft.HEVCVideoExtension', 'Microsoft.HEVCVideoExtensions'];
var app_info = vcf::microsoft_appstore::get_app_info(app_list:apps);
vcf::check_granularity(app_info:app_info, sig_segments:3);
var constraints = [
{ 'fixed_version' : '1.0.41483.0', 'fixed_display' : '1.0.41483.0 / 1.0.41531.0'}
];
vcf::microsoft_appstore::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31947
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33775
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33776
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33777
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33778
www.nessus.org/u?073f382b
www.nessus.org/u?4078abde
www.nessus.org/u?794ab155
www.nessus.org/u?800157d3
www.nessus.org/u?fdb9707d
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.045 Low
EPSS
Percentile
92.5%