Vulnerabilities > CVE-2019-8670 - Improper Input Validation vulnerability in Apple mac OS X

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
LOW
Availability impact
NONE
network
low complexity
apple
CWE-20
nessus
NVD
Published: 2019-12-18
Updated: 2019-12-19

Summary

An inconsistent user interface issue was addressed with improved state management. This issue is fixed in macOS Mojave 10.14.6, Safari 12.1.2. Visiting a malicious website may lead to address bar spoofing.

Vulnerable Configurations

Part Description Count
OS
Apple
161
Application
Apple
168

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_SAFARI_12_1_2.NASL
    descriptionThe version of Apple Safari installed on the remote macOS or Mac OS X host is prior to 12.1.2 It is, therefore, affected by multiple vulnerabilities in the following components : - Safari - WebKit
    last seen2020-06-01
    modified2020-06-02
    plugin id128178
    published2019-08-27
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/128178
    titlemacOS : Apple Safari < 12.1.2 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(128178);
  script_version("1.2");
  script_cvs_date("Date: 2019/09/24 11:01:33");

  script_cve_id(
    "CVE-2019-8644",
    "CVE-2019-8649",
    "CVE-2019-8658",
    "CVE-2019-8666",
    "CVE-2019-8669",
    "CVE-2019-8670",
    "CVE-2019-8671",
    "CVE-2019-8672",
    "CVE-2019-8673",
    "CVE-2019-8676",
    "CVE-2019-8677",
    "CVE-2019-8678",
    "CVE-2019-8679",
    "CVE-2019-8680",
    "CVE-2019-8681",
    "CVE-2019-8683",
    "CVE-2019-8684",
    "CVE-2019-8685",
    "CVE-2019-8686",
    "CVE-2019-8687",
    "CVE-2019-8688",
    "CVE-2019-8689",
    "CVE-2019-8690"
  );
  script_bugtraq_id(
      109327,
      109328,
      109329
  );

  script_name(english:"macOS : Apple Safari < 12.1.2 Multiple Vulnerabilities");
  script_summary(english:"Checks the Safari version.");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Apple Safari installed on the remote macOS or Mac OS X
host is prior to 12.1.2 It is, therefore, affected by multiple
vulnerabilities in the following components :

  - Safari
  - WebKit");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT210355");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apple Safari version 12.1.2 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-8644");
  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:"2019/07/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:safari");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_apple_safari_installed.nbin");
  script_require_keys("Host/MacOSX/Version", "MacOSX/Safari/Installed");

  exit(0);
}

include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');

os = get_kb_item_or_exit('Host/MacOSX/Version');

if (!preg(pattern:"Mac OS X 10\.(12|13|14)([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, 'macOS Sierra 10.12 / macOS High Sierra 10.13 / macOS Mojave 10.14');

installed = get_kb_item_or_exit('MacOSX/Safari/Installed', exit_code:0);
path      = get_kb_item_or_exit('MacOSX/Safari/Path', exit_code:1);
version   = get_kb_item_or_exit('MacOSX/Safari/Version', exit_code:1);

fixed_version = '12.1.2';

if (ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1)
{
  report = report_items_str(
    report_items:make_array(
      'Path', path,
      'Installed version', version,
      'Fixed version', fixed_version
    ),
    ordered_fields:make_list('Path', 'Installed version', 'Fixed version')
  );
  security_report_v4(port:0, severity:SECURITY_HOLE, extra:report, xss:TRUE);
}
else audit(AUDIT_INST_PATH_NOT_VULN, 'Safari', version, path);
  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_10_14_6.NASL
    descriptionThe remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.6. It is, therefore, affected by multiple vulnerabilities : - An application may be able to read restricted memory (CVE-2019-8691, CVE-2019-8692, CVE-2019-8693) - Extracting a zip file containing a symbolic link to an endpoint in an NFS mount that is attacker controlled may bypass Gatekeeper (CVE-2019-8656) - A remote attacker may be able to cause arbitrary code execution (CVE-2019-8648, CVE-2018-19860, CVE-2019-8661) - A remote attacker may be able to leak memory (CVE-2019-8646, CVE-2019-8663) - A remote attacker may be able to cause unexpected application termination or arbitrary code execution (CVE-2019-8641, CVE-2019-8660) - An application may be able to execute arbitrary code with system privileges (CVE-2019-8695, CVE-2019-8697) - An issue existed in Samba that may allow attackers to perform unauthorized actions by intercepting communications between services (CVE-2018-16860) - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8694) - A remote attacker may be able to view sensitive information (CVE-2019-13118) - An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary (CVE-2019-8662) - Visiting a malicious website may lead to address bar spoofing (CVE-2019-8670) - The encryption status of a Time Machine backup may be incorrect (CVE-2019-8667) - Parsing a maliciously crafted office document may lead to an unexpected application termination or arbitrary code execution (CVE-2019-8657) - Processing maliciously crafted web content may lead to universal cross site scripting (CVE-2019-8690, CVE-2019-8649, CVE-2019-8658) - Processing maliciously crafted web content may lead to arbitrary code execution (CVE-2019-8644, CVE-2019-8666, CVE-2019-8669, CVE-2019-8671, CVE-2019-8672, CVE-2019-8673, CVE-2019-8676, CVE-2019-8677, CVE-2019-8678, CVE-2019-8679, CVE-2019-8680, CVE-2019-8681, CVE-2019-8683, CVE-2019-8684, CVE-2019-8685, CVE-2019-8686, CVE-2019-8687, CVE-2019-8688, CVE-2019-8689) Note that Nessus has not tested for this issue but has instead relied only on the operating system
    last seen2020-06-01
    modified2020-06-02
    plugin id127054
    published2019-07-26
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127054
    titlemacOS 10.14.x < 10.14.6 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(127054);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/03");

  script_cve_id(
    "CVE-2018-16860",
    "CVE-2018-19860",
    "CVE-2019-8641",
    "CVE-2019-8644",
    "CVE-2019-8646",
    "CVE-2019-8648",
    "CVE-2019-8649",
    "CVE-2019-8656",
    "CVE-2019-8657",
    "CVE-2019-8658",
    "CVE-2019-8660",
    "CVE-2019-8661",
    "CVE-2019-8662",
    "CVE-2019-8663",
    "CVE-2019-8666",
    "CVE-2019-8667",
    "CVE-2019-8669",
    "CVE-2019-8670",
    "CVE-2019-8671",
    "CVE-2019-8672",
    "CVE-2019-8673",
    "CVE-2019-8676",
    "CVE-2019-8677",
    "CVE-2019-8678",
    "CVE-2019-8679",
    "CVE-2019-8680",
    "CVE-2019-8681",
    "CVE-2019-8683",
    "CVE-2019-8684",
    "CVE-2019-8685",
    "CVE-2019-8686",
    "CVE-2019-8687",
    "CVE-2019-8688",
    "CVE-2019-8689",
    "CVE-2019-8690",
    "CVE-2019-8691",
    "CVE-2019-8692",
    "CVE-2019-8693",
    "CVE-2019-8694",
    "CVE-2019-8695",
    "CVE-2019-8697",
    "CVE-2019-13118"
  );
  script_xref(name:"APPLE-SA", value:"HT210348");
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2019-07-17");

  script_name(english:"macOS 10.14.x < 10.14.6 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Mac OS X / macOS.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a macOS update that fixes multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.6. It is, therefore, affected by
multiple vulnerabilities :

  - An application may be able to read restricted memory
    (CVE-2019-8691, CVE-2019-8692, CVE-2019-8693)

  - Extracting a zip file containing a symbolic link to an
    endpoint in an NFS mount that is attacker controlled may
    bypass Gatekeeper (CVE-2019-8656)

  - A remote attacker may be able to cause arbitrary code
    execution (CVE-2019-8648, CVE-2018-19860, CVE-2019-8661)

  - A remote attacker may be able to leak memory
    (CVE-2019-8646, CVE-2019-8663)

  - A remote attacker may be able to cause unexpected
    application termination or arbitrary code execution
    (CVE-2019-8641, CVE-2019-8660)

  - An application may be able to execute arbitrary code
    with system privileges (CVE-2019-8695, CVE-2019-8697)

  - An issue existed in Samba that may allow attackers to
    perform unauthorized actions by intercepting
    communications between services (CVE-2018-16860)

  - An application may be able to execute arbitrary code
    with kernel privileges (CVE-2019-8694)

  - A remote attacker may be able to view sensitive
    information (CVE-2019-13118)

  - An attacker may be able to trigger a use-after-free in
    an application deserializing an untrusted NSDictionary
    (CVE-2019-8662)

  - Visiting a malicious website may lead to address bar
    spoofing (CVE-2019-8670)

  - The encryption status of a Time Machine backup may be
    incorrect (CVE-2019-8667)

  - Parsing a maliciously crafted office document may lead
    to an unexpected application termination or arbitrary
    code execution (CVE-2019-8657)

  - Processing maliciously crafted web content may lead to
    universal cross site scripting (CVE-2019-8690,
    CVE-2019-8649, CVE-2019-8658)

  - Processing maliciously crafted web content may lead to
    arbitrary code execution (CVE-2019-8644, CVE-2019-8666,
    CVE-2019-8669, CVE-2019-8671, CVE-2019-8672,
    CVE-2019-8673, CVE-2019-8676, CVE-2019-8677,
    CVE-2019-8678, CVE-2019-8679, CVE-2019-8680,
    CVE-2019-8681, CVE-2019-8683, CVE-2019-8684,
    CVE-2019-8685, CVE-2019-8686, CVE-2019-8687,
    CVE-2019-8688, CVE-2019-8689)

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-us/HT210348");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS version 10.14.6 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-8695");

  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:"2019/06/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/26");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:macos");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl");
  script_require_ports("Host/MacOSX/Version", "Host/OS");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

fix = "10.14.6";
minver = "10.14";

os = get_kb_item("Host/MacOSX/Version");
if (!os)
{
  os = get_kb_item_or_exit("Host/OS");
  if ("Mac OS X" >!< os) audit(AUDIT_OS_NOT, "macOS / Mac OS X");

  c = get_kb_item("Host/OS/Confidence");
  if (c <= 70) exit(1, "Can't determine the host's OS with sufficient confidence.");
}
if (!os) audit(AUDIT_OS_NOT, "macOS / Mac OS X");

matches = pregmatch(pattern:"Mac OS X ([0-9]+(\.[0-9]+)+)", string:os);
if (empty_or_null(matches)) exit(1, "Failed to parse the macOS / Mac OS X version ('" + os + "').");

version = matches[1];

if (ver_compare(ver:version, minver:minver, fix:fix, strict:FALSE) == -1)
{
  security_report_v4(
    port:0,
    severity:SECURITY_HOLE,
    extra:
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fix +
      '\n'
    );
}
else audit(AUDIT_INST_VER_NOT_VULN, "macOS / Mac OS X", version);
  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_SECUPD2019-004.NASL
    descriptionThe remote host is running Mac OS X 10.12.6 or Mac OS X 10.13.6 and is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An application may be able to read restricted memory (CVE-2019-8691, CVE-2019-8692, CVE-2019-8693) - Extracting a zip file containing a symbolic link to an endpoint in an NFS mount that is attacker controlled may bypass Gatekeeper (CVE-2019-8656) - A remote attacker may be able to cause arbitrary code execution (CVE-2019-8648, CVE-2018-19860, CVE-2019-8661) - A remote attacker may be able to leak memory (CVE-2019-8646, CVE-2019-8663) - A remote attacker may be able to cause unexpected application termination or arbitrary code execution ( CVE-2019-8641, CVE-2019-8660) - An application may be able to execute arbitrary code with system privileges (CVE-2019-8695, CVE-2019-8697) - An issue existed in Samba that may allow attackers to perform unauthorized actions by intercepting communications between services (CVE-2018-16860) - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8694) - A remote attacker may be able to view sensitive information (CVE-2019-13118) - An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary (CVE-2019-8662) - Visiting a malicious website may lead to address bar spoofing (CVE-2019-8670) - The encryption status of a Time Machine backup may be incorrect (CVE-2019-8667) - Parsing a maliciously crafted office document may lead to an unexpected application termination or arbitrary code execution (CVE-2019-8657) - Processing maliciously crafted web content may lead to universal cross site scripting (CVE-2019-8649, CVE-2019-8658, CVE-2019-8690) - Processing maliciously crafted web content may lead to arbitrary code execution (CVE-2019-8644, CVE-2019-8666, CVE-2019-8669, CVE-2019-8671, CVE-2019-8672, CVE-2019-8673, CVE-2019-8676, CVE-2019-8677, CVE-2019-8678, CVE-2019-8679, CVE-2019-8680, CVE-2019-8681, CVE-2019-8683, CVE-2019-8684, CVE-2019-8685, CVE-2019-8686, CVE-2019-8687, CVE-2019-8688, CVE-2019-8689) Note that Nessus has not tested for this issue but has instead relied only on the operating system
    last seen2020-06-01
    modified2020-06-02
    plugin id127055
    published2019-07-26
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127055
    titlemacOS Sierra / High Sierra Multiple Vulnerabilities (Security Update 2019-004)
    code
    #
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(127055);
  script_version("1.6");
  script_cvs_date("Date: 2020/01/03");

  script_cve_id(
    "CVE-2018-16860",
    "CVE-2018-19860",
    "CVE-2019-8641",
    "CVE-2019-8644",
    "CVE-2019-8646",
    "CVE-2019-8648",
    "CVE-2019-8649",
    "CVE-2019-8656",
    "CVE-2019-8657",
    "CVE-2019-8658",
    "CVE-2019-8660",
    "CVE-2019-8661",
    "CVE-2019-8662",
    "CVE-2019-8663",
    "CVE-2019-8666",
    "CVE-2019-8667",
    "CVE-2019-8669",
    "CVE-2019-8670",
    "CVE-2019-8671",
    "CVE-2019-8672",
    "CVE-2019-8673",
    "CVE-2019-8676",
    "CVE-2019-8677",
    "CVE-2019-8678",
    "CVE-2019-8679",
    "CVE-2019-8680",
    "CVE-2019-8681",
    "CVE-2019-8683",
    "CVE-2019-8684",
    "CVE-2019-8685",
    "CVE-2019-8686",
    "CVE-2019-8687",
    "CVE-2019-8688",
    "CVE-2019-8689",
    "CVE-2019-8690",
    "CVE-2019-8691",
    "CVE-2019-8692",
    "CVE-2019-8693",
    "CVE-2019-8694",
    "CVE-2019-8695",
    "CVE-2019-8697",
    "CVE-2019-13118"
  );
  script_xref(name:"APPLE-SA", value:"HT210348");
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2019-07-17");

  script_name(english:"macOS Sierra / High Sierra Multiple Vulnerabilities (Security Update 2019-004)");
  script_summary(english:"Checks the presence of Security Update 2019-004.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a macOS or Mac OS X security update that fixes multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"The remote host is running Mac OS X 10.12.6 or Mac OS X 10.13.6 
and is missing a security update. It is, therefore, affected by
multiple vulnerabilities :

  - An application may be able to read restricted memory
    (CVE-2019-8691, CVE-2019-8692, CVE-2019-8693)

  - Extracting a zip file containing a symbolic link to an
    endpoint in an NFS mount that is attacker controlled may
    bypass Gatekeeper (CVE-2019-8656)

  - A remote attacker may be able to cause arbitrary code
    execution (CVE-2019-8648, CVE-2018-19860, CVE-2019-8661)

  - A remote attacker may be able to leak memory
    (CVE-2019-8646, CVE-2019-8663)

  - A remote attacker may be able to cause unexpected
    application termination or arbitrary code execution
    ( CVE-2019-8641, CVE-2019-8660)

  - An application may be able to execute arbitrary code
    with system privileges (CVE-2019-8695, CVE-2019-8697)

  - An issue existed in Samba that may allow attackers to
    perform unauthorized actions by intercepting
    communications between services (CVE-2018-16860)

  - An application may be able to execute arbitrary code
    with kernel privileges (CVE-2019-8694)

  - A remote attacker may be able to view sensitive
    information (CVE-2019-13118)

  - An attacker may be able to trigger a use-after-free in
    an application deserializing an untrusted NSDictionary
    (CVE-2019-8662)

  - Visiting a malicious website may lead to address bar
    spoofing (CVE-2019-8670)

  - The encryption status of a Time Machine backup may be
    incorrect (CVE-2019-8667)

  - Parsing a maliciously crafted office document may lead
    to an unexpected application termination or arbitrary
    code execution (CVE-2019-8657)

  - Processing maliciously crafted web content may lead to
    universal cross site scripting (CVE-2019-8649, 
    CVE-2019-8658, CVE-2019-8690)

  - Processing maliciously crafted web content may lead to
    arbitrary code execution (CVE-2019-8644, CVE-2019-8666,
    CVE-2019-8669, CVE-2019-8671, CVE-2019-8672,
    CVE-2019-8673, CVE-2019-8676, CVE-2019-8677,
    CVE-2019-8678, CVE-2019-8679, CVE-2019-8680,
    CVE-2019-8681, CVE-2019-8683, CVE-2019-8684,
    CVE-2019-8685, CVE-2019-8686, CVE-2019-8687,
    CVE-2019-8688, CVE-2019-8689)

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-us/HT210348");
  script_set_attribute(attribute:"solution", value:
"Install Security Update 2019-004 or later for 10.12.x or 10.13.x.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-8695");

  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:"2019/06/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/26");

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

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

# Compare 2 patch numbers to determine if patch requirements are satisfied.
# Return true if this patch or a later patch is applied
# Return false otherwise
function check_patch(year, number)
{
  local_var p_split = split(patch, sep:"-");
  local_var p_year  = int( p_split[0]);
  local_var p_num   = int( p_split[1]);

  if (year >  p_year) return TRUE;
  else if (year <  p_year) return FALSE;
  else if (number >=  p_num) return TRUE;
  else return FALSE;
}

get_kb_item_or_exit("Host/local_checks_enabled");
os = get_kb_item_or_exit("Host/MacOSX/Version");

if (!preg(pattern:"Mac OS X 10\.1[2-3]\.", string:os))
  audit(AUDIT_OS_NOT, "Mac OS X 10.12.x / 10.13.x");

patch = '2019-004';

packages = get_kb_item_or_exit('Host/MacOSX/packages/boms', exit_code:1);
sec_boms_report = pgrep(
  pattern:"^com\.apple\.pkg\.update\.(security\.|os\.SecUpd).*bom$",
  string:packages
);
sec_boms = split(sec_boms_report, sep:'\n');

foreach package (sec_boms)
{
  # Grab patch year and number
  matches = pregmatch(pattern:"[^0-9](20[0-9][0-9])[-.]([0-9]{3})[^0-9]", string:package);
  if (empty_or_null(matches)) continue;
  if (empty_or_null(matches[1]) || empty_or_null(matches[2]))
    continue;

  patch_found = check_patch(year:int(matches[1]), number:int(matches[2]));
  if (patch_found) exit(0, 'The host has Security Update ' + patch + ' or later installed and is therefore not affected.');
}

report =  '\n  Missing security update : ' + patch;
report += '\n  Installed security BOMs : ';
if (sec_boms_report) report += str_replace(find:'\n', replace:'\n                            ', string:sec_boms_report);
else report += 'n/a';
report += '\n';

security_report_v4(port:0, severity:SECURITY_HOLE, extra:report);

References