Vulnerabilities > CVE-2019-8504 - Improper Initialization vulnerability in Apple Iphone OS
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4. A local user may be able to read kernel memory.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
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 family MacOS X Local Security Checks NASL id MACOS_10_14_4.NASL description 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) last seen 2020-06-01 modified 2020-06-02 plugin id 123128 published 2019-03-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123128 title macOS 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 family MacOS X Local Security Checks NASL id MACOS_SECUPD_10_13_6_2019-002.NASL description 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 last seen 2020-03-18 modified 2019-03-27 plugin id 123130 published 2019-03-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123130 title macOS 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);