Vulnerabilities > CVE-2018-4206 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An issue was discovered in certain Apple products. iOS before 11.3.1 is affected. macOS before 10.13.4 Security Update 2018-001 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "Crash Reporter" component. It allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted app that replaces a privileged port name.
Vulnerable Configurations
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.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Exploit-Db
| description | Apple macOS/iOS - ReportCrash mach port Replacement due to Failure to Respect MIG Ownership Rules. CVE-2018-4206. Dos exploit for Multiple platform |
| file | exploits/multiple/dos/44562.c |
| id | EDB-ID:44562 |
| last seen | 2018-05-24 |
| modified | 2018-04-30 |
| platform | multiple |
| port | |
| published | 2018-04-30 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/44562/ |
| title | Apple macOS/iOS - ReportCrash mach port Replacement due to Failure to Respect MIG Ownership Rules |
| type | dos |
Nessus
NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD_10_13_4_2018-001.NASL description The remote host is running macOS 10.13.4 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - Crash Reporter - LinkPresentation last seen 2020-03-18 modified 2018-04-27 plugin id 109361 published 2018-04-27 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109361 title macOS Multiple Vulnerabilities (Security Update 2018-001) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(109361); script_version("1.5"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/13"); script_cve_id("CVE-2018-4187", "CVE-2018-4206"); script_bugtraq_id(103957); script_name(english:"macOS Multiple Vulnerabilities (Security Update 2018-001)"); script_summary(english:"Checks for the presence of Security Update 2018-001."); 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 10.13.4 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - Crash Reporter - LinkPresentation"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208742"); # https://lists.apple.com/archives/security-announce/2018/Apr/msg00001.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?af062f1b"); script_set_attribute(attribute:"solution", value: "Install Security Update 2018-001 or later for 10.13.4."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); 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-2018-4206"); 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:"2018/04/24"); script_set_attribute(attribute:"patch_publication_date", value:"2018/04/24"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/27"); 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) 2018-2020 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' : '10.13.4', 'fixed_build': '17E202', 'fixed_display' : '10.13.4 Security Update 2018-001' } ]; vcf::apple::macos::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);NASL family Misc. NASL id APPLETV_11_4.NASL description According to its banner, the version of Apple TV on the remote device is prior to 11.4. It is, therefore, affected by multiple vulnerabilities as described in the HT208850 security advisory. Note that only 4th and 5th generation models are affected by these vulnerabilities. last seen 2020-06-01 modified 2020-06-02 plugin id 110325 published 2018-06-05 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110325 title Apple TV < 11.4 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(110325); script_version("1.6"); script_cvs_date("Date: 2019/04/05 23:25:06"); script_cve_id( "CVE-2018-4188", "CVE-2018-4190", "CVE-2018-4192", "CVE-2018-4198", "CVE-2018-4199", "CVE-2018-4200", "CVE-2018-4201", "CVE-2018-4204", "CVE-2018-4206", "CVE-2018-4211", "CVE-2018-4214", "CVE-2018-4218", "CVE-2018-4222", "CVE-2018-4223", "CVE-2018-4224", "CVE-2018-4232", "CVE-2018-4233", "CVE-2018-4235", "CVE-2018-4237", "CVE-2018-4240", "CVE-2018-4241", "CVE-2018-4243", "CVE-2018-4246", "CVE-2018-4249", "CVE-2018-5383" ); script_bugtraq_id( 103957, 103958, 103961, 104378 ); script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-6-01-6"); script_name(english:"Apple TV < 11.4 Multiple Vulnerabilities"); script_summary(english:"Checks the build number."); script_set_attribute(attribute:"synopsis", value: "The remote Apple TV device is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "According to its banner, the version of Apple TV on the remote device is prior to 11.4. It is, therefore, affected by multiple vulnerabilities as described in the HT208850 security advisory. Note that only 4th and 5th generation models are affected by these vulnerabilities."); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208850"); # https://lists.apple.com/archives/security-announce/2018/Jun/msg00003.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0e8b8fb7"); # https://lists.apple.com/archives/security-announce/2018/Jul/msg00011.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b0bb7d4f"); script_set_attribute(attribute:"solution", value: "Upgrade to Apple TV version 11.4 or later. Note that this update is only available for 4th and 5th generation models."); 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:H/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:H/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-4241"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploited_by_malware", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'Mac OS X libxpc MITM Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/01"); script_set_attribute(attribute:"patch_publication_date", value:"2018/06/01"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/06/05"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:apple_tv"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Misc."); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("appletv_version.nasl"); script_require_keys("AppleTV/Version", "AppleTV/Model", "AppleTV/URL", "AppleTV/Port"); script_require_ports("Services/www", 7000); exit(0); } include("audit.inc"); include("appletv_func.inc"); url = get_kb_item('AppleTV/URL'); if (empty_or_null(url)) exit(0, 'Cannot determine Apple TV URL.'); port = get_kb_item('AppleTV/Port'); if (empty_or_null(port)) exit(0, 'Cannot determine Apple TV port.'); build = get_kb_item('AppleTV/Version'); if (empty_or_null(build)) audit(AUDIT_UNKNOWN_DEVICE_VER, 'Apple TV'); model = get_kb_item('AppleTV/Model'); if (empty_or_null(model)) exit(0, 'Cannot determine Apple TV model.'); # https://en.wikipedia.org/wiki/TvOS # 4th gen model "5,3" and 5th gen model "6,2" share same build fixed_build = "15L577"; tvos_ver = '11'; # determine gen from the model gen = APPLETV_MODEL_GEN[model]; appletv_check_version( build : build, fix : fixed_build, affected_gen : make_list(4, 5), fix_tvos_ver : tvos_ver, model : model, gen : gen, port : port, url : url, severity : SECURITY_HOLE );
References
- https://support.apple.com/HT208851
- https://support.apple.com/HT208850
- https://support.apple.com/HT208743
- https://support.apple.com/HT208742
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1529
- https://www.exploit-db.com/exploits/44562/
- http://www.securitytracker.com/id/1040744
- http://www.securityfocus.com/bid/103958
- http://www.securityfocus.com/bid/103957