Vulnerabilities > CVE-2019-8522 - Missing Authentication for Critical Function vulnerability in Apple mac OS X

047910
CVSS 5.5 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
NONE
Integrity impact
HIGH
Availability impact
NONE
local
low complexity
apple
CWE-306
nessus
NVD
Published: 2019-12-18
Updated: 2021-07-21

Summary

A logic issue was addressed with improved state management. This issue is fixed in macOS Mojave 10.14.4. An encrypted volume may be unmounted and remounted by a different user without prompting for the password.

Vulnerable Configurations

Part Description Count
OS
Apple
158

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Choosing a Message/Channel Identifier on a Public/Multicast Channel
    Attackers aware that more data is being fed into a multicast or public information distribution means can 'select' information bound only for another client, even if the distribution means itself forces users to authenticate in order to connect initially. Doing so allows the attacker to gain access to possibly privileged information, possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could change its identifier from a less privileged to more so privileged channel or command.
  • Using Unpublished Web Service APIs
    An attacker searches for and invokes Web Services APIs that the target system designers did not intend to be publicly available. If these APIs fail to authenticate requests the attacker may be able to invoke services and/or gain privileges they are not authorized for.
  • Manipulating Writeable Terminal Devices
    This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded.
  • Cross Site Request Forgery (aka Session Riding)
    An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

Nessus

  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_10_14_4.NASL
    descriptionThe remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.4. It is, therefore, affected by multiple vulnerabilities, including: - Mounting a maliciously crafted NFS network share may lead to arbitrary code execution with system privileges. (CVE-2019-8508) - An application may be able to execute arbitrary code with kernel privileges. (CVE-2019-8529) - A malicious application may be able to execute arbitrary code with system privileges (CVE-2019-8549)
    last seen2020-06-01
    modified2020-06-02
    plugin id123128
    published2019-03-27
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123128
    titlemacOS 10.14.x < 10.14.4 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(123128);
  script_version("1.7");
  script_cvs_date("Date: 2020/01/31");

  script_cve_id(
    "CVE-2018-12015",
    "CVE-2018-18311",
    "CVE-2018-18313",
    "CVE-2019-6207",
    "CVE-2019-6237",
    "CVE-2019-6239",
    "CVE-2019-7293",
    "CVE-2019-8502",
    "CVE-2019-8504",
    "CVE-2019-8507",
    "CVE-2019-8508",
    "CVE-2019-8510",
    "CVE-2019-8511",
    "CVE-2019-8513",
    "CVE-2019-8514",
    "CVE-2019-8516",
    "CVE-2019-8517",
    "CVE-2019-8519",
    "CVE-2019-8520",
    "CVE-2019-8521",
    "CVE-2019-8522",
    "CVE-2019-8526",
    "CVE-2019-8527",
    "CVE-2019-8529",
    "CVE-2019-8530",
    "CVE-2019-8533",
    "CVE-2019-8537",
    "CVE-2019-8540",
    "CVE-2019-8542",
    "CVE-2019-8545",
    "CVE-2019-8546",
    "CVE-2019-8549",
    "CVE-2019-8550",
    "CVE-2019-8552",
    "CVE-2019-8555",
    "CVE-2019-8561",
    "CVE-2019-8565"
  );
  script_bugtraq_id(104423, 106072, 106145);
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2019-3-25-2");

  script_name(english:"macOS 10.14.x < 10.14.4 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 security
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 10.14.4. It is, therefore, affected by multiple
vulnerabilities, including:

  - Mounting a maliciously crafted NFS network share may lead to
    arbitrary code execution with system privileges. (CVE-2019-8508)

  - An application may be able to execute arbitrary code with kernel
    privileges. (CVE-2019-8529)

  - A malicious application may be able to execute arbitrary code
    with system privileges (CVE-2019-8549)");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209600");
  # https://lists.apple.com/archives/security-announce/2019/Mar/msg00001.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?71533e9d");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS version 10.14.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/S:U/C:N/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-2019-8527");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Mac OS X Feedback Assistant Race Condition');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27");

  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 = "10.14.4";
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 idMACOS_SECUPD_10_13_6_2019-002.NASL
    descriptionThe remote host is running macOS 10.13.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities including: - An application may be able to execute arbitrary code with kernel privileges. (CVE-2019-8529) - A local user may be able to read kernel memory. (CVE-2019-8504) - A malicious application may be able to determine kernel memory layout. (CVE-2019-6207, CVE-2019-8510) - 802.1X - DiskArbitration - Feedback Assistant - IOKit - IOKit SCSI - Kernel - PackageKit - Perl - Security - Time Machine - Wi-Fi
    last seen2020-03-18
    modified2019-03-27
    plugin id123130
    published2019-03-27
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123130
    titlemacOS 10.13.6 Multiple Vulnerabilities (Security Update 2019-002)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(123130);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/13");

  script_cve_id(
    "CVE-2018-12015",
    "CVE-2018-18311",
    "CVE-2018-18313",
    "CVE-2019-6207",
    "CVE-2019-8504",
    "CVE-2019-8510",
    "CVE-2019-8513",
    "CVE-2019-8520",
    "CVE-2019-8521",
    "CVE-2019-8522",
    "CVE-2019-8526",
    "CVE-2019-8527",
    "CVE-2019-8529",
    "CVE-2019-8555",
    "CVE-2019-8561",
    "CVE-2019-8564"
  );
  script_bugtraq_id(104423, 106072, 106145);
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2019-3-25-2");

  script_name(english:"macOS 10.13.6 Multiple Vulnerabilities (Security Update 2019-002)");
  script_summary(english:"Checks for the presence of Security Update 2019-002 (APPLE-SA-2019-3-25-2)");

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

  - An application may be able to execute arbitrary code with kernel
    privileges. (CVE-2019-8529)

  - A local user may be able to read kernel memory. (CVE-2019-8504)

  - A malicious application may be able to determine kernel memory
    layout. (CVE-2019-6207, CVE-2019-8510)

  - 802.1X
  - DiskArbitration
  - Feedback Assistant
  - IOKit
  - IOKit SCSI
  - Kernel
  - PackageKit
  - Perl
  - Security
  - Time Machine
  - Wi-Fi");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209600");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209635");
  # https://lists.apple.com/archives/security-announce/2019/Mar/msg00001.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?71533e9d");
  script_set_attribute(attribute:"solution", value:
"Install Security Update 2019-002 or later for 10.13.6.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/S:U/C:N/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-2019-8527");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Mac OS X TimeMachine (tmdiagnose) Command Injection Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27");

  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_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "Host/MacOSX/packages/boms");

  exit(0);
}

include('lists.inc');
include('vcf.inc');
include('vcf_extras_apple.inc');

app_info = vcf::apple::macos::get_app_info();

constraints = [
  { 'min_version' : '10.13', 'max_version' : '10.13.6', 'fixed_build': '17G6029', 'fixed_display' : '10.13.6 Security Update 2019-002' }
];
vcf::apple::macos::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_SECUPD_10_12_6_2019-002.NASL
    descriptionThe remote host is running Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities including: - A malicious application may be able to execute arbitrary code with kernel privileges. (CVE-2019-8555) - A malicious application may be able to determine kernel memory layout. (CVE-2019-6207, CVE-2019-8510) - A malicious application may be able to read restricted memory. (CVE-2019-8520) - 802.1X - DiskArbitration - Feedback Assistant - IOKit - IOKit SCSI - Kernel - PackageKit - Perl - Security - Time Machine - Wi-Fi
    last seen2020-06-01
    modified2020-06-02
    plugin id123129
    published2019-03-27
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123129
    titlemacOS and Mac OS X Multiple Vulnerabilities (Security Update 2019-002)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(123129);
  script_version("1.8");
  script_cvs_date("Date: 2020/01/31");

  script_cve_id(
    "CVE-2018-12015",
    "CVE-2018-18311",
    "CVE-2018-18313",
    "CVE-2019-6207",
    "CVE-2019-8508",
    "CVE-2019-8510",
    "CVE-2019-8513",
    "CVE-2019-8520",
    "CVE-2019-8521",
    "CVE-2019-8522",
    "CVE-2019-8526",
    "CVE-2019-8527",
    "CVE-2019-8530",
    "CVE-2019-8540",
    "CVE-2019-8555",
    "CVE-2019-8561",
    "CVE-2019-8564"
  );
  script_bugtraq_id(104423, 106072, 106145);
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2019-3-25-2");

  script_name(english:"macOS and Mac OS X Multiple Vulnerabilities (Security Update 2019-002)");
  script_summary(english:"Checks for the presence of Security Update 2019-002.");

  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 and is missing a security
update. It is therefore, affected by multiple vulnerabilities
including:

  - A malicious application may be able to execute arbitrary code
    with kernel privileges. (CVE-2019-8555)

  - A malicious application may be able to determine kernel memory
    layout. (CVE-2019-6207, CVE-2019-8510)

  - A malicious application may be able to read restricted memory.
    (CVE-2019-8520)

  - 802.1X
  - DiskArbitration
  - Feedback Assistant
  - IOKit
  - IOKit SCSI
  - Kernel
  - PackageKit
  - Perl
  - Security
  - Time Machine
  - Wi-Fi");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209600");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209635");
  # https://lists.apple.com/archives/security-announce/2019/Mar/msg00001.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?71533e9d");
  script_set_attribute(attribute:"solution", value:
"Install Security Update 2019-002 or later for 10.12.x.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/S:U/C:N/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-2019-8527");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Mac OS X TimeMachine (tmdiagnose) Command Injection Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27");

  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_keys("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\.12\.6([^0-9]|$)", string:os))
  audit(AUDIT_OS_NOT, "Mac OS X 10.12.6");

patch = "2019-002";

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