Vulnerabilities > CVE-2019-8757 - Race Condition vulnerability in Apple mac OS X

047910
CVSS 2.5 - LOW
Attack vector
LOCAL
Attack complexity
HIGH
Privileges required
LOW
Confidentiality impact
NONE
Integrity impact
LOW
Availability impact
NONE
local
high complexity
apple
CWE-362
nessus

Summary

A race condition existed when reading and writing user preferences. This was addressed with improved state handling. This issue is fixed in macOS Catalina 10.15. The "Share Mac Analytics" setting may not be disabled when a user deselects the switch to share analytics.

Vulnerable Configurations

Part Description Count
OS
Apple
182

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Nessus

NASL familyMacOS X Local Security Checks
NASL idMACOS_HT210634.NASL
descriptionThe remote host is running a version of macOS / Mac OS X that is prior to 10.15. It is, therefore, affected by multiple vulnerabilities. - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8748) - Multiple issues in PHP (CVE-2019-11041, CVE-2019-11042) - Processing a maliciously crafted movie may result in the disclosure of process memory (CVE-2019-8705) - The
last seen2020-06-01
modified2020-06-02
plugin id130057
published2019-10-18
reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/130057
titlemacOS < 10.15 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(130057);
  script_version("1.7");
  script_cvs_date("Date: 2020/01/07");

  script_cve_id(
    "CVE-2019-8701",
    "CVE-2019-8705",
    "CVE-2019-8717",
    "CVE-2019-8730",
    "CVE-2019-8745",
    "CVE-2019-8748",
    "CVE-2019-8755",
    "CVE-2019-8757",
    "CVE-2019-8758",
    "CVE-2019-8768",
    "CVE-2019-8769",
    "CVE-2019-8770",
    "CVE-2019-8772",
    "CVE-2019-8781",
    "CVE-2019-11041",
    "CVE-2019-11042"
  );
  script_xref(name:"APPLE-SA", value:"HT210634");

  script_name(english:"macOS < 10.15 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of 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 prior
to 10.15. It is, therefore, affected by multiple vulnerabilities. 

  - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8748)

  - Multiple issues in PHP (CVE-2019-11041, CVE-2019-11042)

  - Processing a maliciously crafted movie may result in the disclosure of process memory (CVE-2019-8705)

  - The 'Share Mac Analytics' setting may not be disabled when a user deselects the switch to share analytics (CVE-2019-8757)

  - An application may be able to execute arbitrary code with system privileges (CVE-2019-8758)

  - A malicious application may be able to determine kernel memory layout (CVE-2019-8755)

  - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8717)

  - An application may be able to execute arbitrary code with kernel privileges (CVE-2019-8781)

  - A local user may be able to view a user's locked notes (CVE-2019-8730)

  - An attacker may be able to exfiltrate the contents of an encrypted PDF (CVE-2019-8772)

  - A malicious application may be able to access recent documents (CVE-2019-8770)

  - An application may be able to execute arbitrary code with system privileges (CVE-2019-8701)

  - Processing a maliciously crafted text file may lead to arbitrary code execution (CVE-2019-8745)

  - Visiting a maliciously crafted website may reveal browsing history (CVE-2019-8769)

  - A user may be unable to delete browsing history items (CVE-2019-8768)

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/HT210634");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS 10.15 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-2019-8781");

  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:"2019/10/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/18");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  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_keys("Settings/ParanoidReport");
  script_require_ports("Host/MacOSX/Version", "Host/OS");

  exit(0);
}

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

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

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# Build numbers from:
# https://en.wikipedia.org/wiki/MacOS#Release_history ->
#  https://en.wikipedia.org/wiki/MacOS_Sierra
#  https://en.wikipedia.org/wiki/MacOS_High_Sierra
#  https://en.wikipedia.org/wiki/MacOS_Mojave
#  https://en.wikipedia.org/wiki/MacOS_Catalina
constraints = [
  { 'min_version': '10.12', 'max_version': '10.15.0', 'fixed_build': '19A583', 'fixed_display': '10.15 Build 19A583' }
];

vcf::apple::macos::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);