Lucene search

K
nessusThis script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.MACOS_HT212804.NASL
HistorySep 16, 2021 - 12:00 a.m.

macOS 11.x < 11.6 (HT212804)

2021-09-1600:00:00
This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
65

9.3 High

CVSS2

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.3 High

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

83.3%

The remote host is running a version of macOS / Mac OS X that is 11.x prior to 11.6 Big Sur. It is, therefore, affected by multiple vulnerabilities including the following:

  • A use after free issue was addressed with improved memory management. Exploitation of this vulnerability may lead to arbitrary code execution. (CVE-2021-30858)

  • An integer overflow was addressed with improved input validation. Exploitation of this vulnerability may lead to arbitrary code execution. (CVE-2021-30860)

  • Insufficient checks when processing maliciously crafted dfont files may lead to arbitrary code execution. (CVE-2021-30841, CVE-2021-30842, CVE-2021-30843)

Note that Nessus has not tested for this issue but has instead relied only on the operating system’s self-reported version number.

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(153429);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/28");

  script_cve_id(
    "CVE-2013-0340",
    "CVE-2021-22925",
    "CVE-2021-30827",
    "CVE-2021-30828",
    "CVE-2021-30829",
    "CVE-2021-30830",
    "CVE-2021-30832",
    "CVE-2021-30841",
    "CVE-2021-30842",
    "CVE-2021-30843",
    "CVE-2021-30844",
    "CVE-2021-30845",
    "CVE-2021-30847",
    "CVE-2021-30850",
    "CVE-2021-30853",
    "CVE-2021-30855",
    "CVE-2021-30857",
    "CVE-2021-30858",
    "CVE-2021-30859",
    "CVE-2021-30860",
    "CVE-2021-30865",
    "CVE-2021-31010"
  );
  script_xref(name:"APPLE-SA", value:"HT212804");
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2021-09-13-3");
  script_xref(name:"IAVA", value:"2021-A-0414-S");
  script_xref(name:"IAVA", value:"2021-A-0437-S");
  script_xref(name:"IAVA", value:"2021-A-0505-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/09/15");

  script_name(english:"macOS 11.x < 11.6 (HT212804)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a macOS security update.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of macOS / Mac OS X that is 11.x prior to 11.6 Big Sur. It is, therefore,
affected by multiple vulnerabilities including the following:

  - A use after free issue was addressed with improved memory management. Exploitation of this vulnerability may lead to 
    arbitrary code execution. (CVE-2021-30858)

  - An integer overflow was addressed with improved input validation. Exploitation of this vulnerability may lead to 
    arbitrary code execution. (CVE-2021-30860)

  - Insufficient checks when processing maliciously crafted dfont files may lead to arbitrary code
    execution. (CVE-2021-30841, CVE-2021-30842, CVE-2021-30843)

Note that Nessus has not tested for this issue but has instead relied only on the operating system's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-gb/HT212804");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS 11.6 or later.");
  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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/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-2021-30865");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-30858");

  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:"2021/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:macos:11.0");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_ports("Host/MacOSX/Version", "Host/local_checks_enabled", "Host/MacOSX/packages/boms");

  exit(0);
}
include('vcf.inc');
include('vcf_extras_apple.inc');

var app_info = vcf::apple::macos::get_app_info();
var constraints = [{'min_version': '11.0', 'fixed_version': '11.6', 'fixed_display': 'macOS Big Sur 11.6'}];

vcf::apple::macos::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE
);
VendorProductVersionCPE
applemacos11.0cpe:/o:apple:macos:11.0
applemac_os_x11.0cpe:/o:apple:mac_os_x:11.0

References

9.3 High

CVSS2

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.3 High

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

83.3%