Vulnerabilities > CVE-2017-13825 - Resource Exhaustion vulnerability in Apple mac OS X
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
An issue was discovered in certain Apple products. macOS before 10.13.1 is affected. The issue involves the "CoreText" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory consumption) via a crafted font file.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- XML Ping of the Death An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
- XML Entity Expansion An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
- Inducing Account Lockout An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
- Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS)) XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Nessus
NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2017-004.NASL description The remote host is running Mac OS X 10.11.6 or Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - 802.1X - apache - AppleScript - ATS - Audio - CFString - CoreText - curl - Dictionary Widget - file - Fonts - fsck_msdos - HFS - Heimdal - HelpViewer - ImageIO - Kernel - libarchive - Open Scripting Architecture - PCRE - Postfix - Quick Look - QuickTime - Remote Management - Sandbox - StreamingZip - tcpdump - Wi-Fi last seen 2020-06-01 modified 2020-06-02 plugin id 104379 published 2017-11-03 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104379 title macOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-001 and 2017-004) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(104379); script_version("1.10"); script_cvs_date("Date: 2019/06/19 15:17:43"); script_cve_id( "CVE-2016-0736", "CVE-2016-2161", "CVE-2016-4736", "CVE-2016-5387", "CVE-2016-8740", "CVE-2016-8743", "CVE-2017-1000100", "CVE-2017-1000101", "CVE-2017-10140", "CVE-2017-11103", "CVE-2017-11108", "CVE-2017-11541", "CVE-2017-11542", "CVE-2017-11543", "CVE-2017-12893", "CVE-2017-12894", "CVE-2017-12895", "CVE-2017-12896", "CVE-2017-12897", "CVE-2017-12898", "CVE-2017-12899", "CVE-2017-12900", "CVE-2017-12901", "CVE-2017-12902", "CVE-2017-12985", "CVE-2017-12986", "CVE-2017-12987", "CVE-2017-12988", "CVE-2017-12989", "CVE-2017-12990", "CVE-2017-12991", "CVE-2017-12992", "CVE-2017-12993", "CVE-2017-12994", "CVE-2017-12995", "CVE-2017-12996", "CVE-2017-12997", "CVE-2017-12998", "CVE-2017-12999", "CVE-2017-13000", "CVE-2017-13001", "CVE-2017-13002", "CVE-2017-13003", "CVE-2017-13004", "CVE-2017-13005", "CVE-2017-13006", "CVE-2017-13007", "CVE-2017-13008", "CVE-2017-13009", "CVE-2017-13010", "CVE-2017-13011", "CVE-2017-13012", "CVE-2017-13013", "CVE-2017-13014", "CVE-2017-13015", "CVE-2017-13016", "CVE-2017-13017", "CVE-2017-13018", "CVE-2017-13019", "CVE-2017-13020", "CVE-2017-13021", "CVE-2017-13022", "CVE-2017-13023", "CVE-2017-13024", "CVE-2017-13025", "CVE-2017-13026", "CVE-2017-13027", "CVE-2017-13028", "CVE-2017-13029", "CVE-2017-13030", "CVE-2017-13031", "CVE-2017-13032", "CVE-2017-13033", "CVE-2017-13034", "CVE-2017-13035", "CVE-2017-13036", "CVE-2017-13037", "CVE-2017-13038", "CVE-2017-13039", "CVE-2017-13040", "CVE-2017-13041", "CVE-2017-13042", "CVE-2017-13043", "CVE-2017-13044", "CVE-2017-13045", "CVE-2017-13046", "CVE-2017-13047", "CVE-2017-13048", "CVE-2017-13049", "CVE-2017-13050", "CVE-2017-13051", "CVE-2017-13052", "CVE-2017-13053", "CVE-2017-13054", "CVE-2017-13055", "CVE-2017-13077", "CVE-2017-13078", "CVE-2017-13080", "CVE-2017-13687", "CVE-2017-13688", "CVE-2017-13689", "CVE-2017-13690", "CVE-2017-13725", "CVE-2017-13782", "CVE-2017-13799", "CVE-2017-13801", "CVE-2017-13804", "CVE-2017-13807", "CVE-2017-13808", "CVE-2017-13809", "CVE-2017-13810", "CVE-2017-13811", "CVE-2017-13812", "CVE-2017-13813", "CVE-2017-13814", "CVE-2017-13815", "CVE-2017-13817", "CVE-2017-13818", "CVE-2017-13819", "CVE-2017-13820", "CVE-2017-13821", "CVE-2017-13822", "CVE-2017-13823", "CVE-2017-13824", "CVE-2017-13825", "CVE-2017-13828", "CVE-2017-13829", "CVE-2017-13830", "CVE-2017-13831", "CVE-2017-13833", "CVE-2017-13834", "CVE-2017-13836", "CVE-2017-13838", "CVE-2017-13840", "CVE-2017-13841", "CVE-2017-13842", "CVE-2017-13843", "CVE-2017-13846", "CVE-2017-13906", "CVE-2017-13908", "CVE-2017-3167", "CVE-2017-3169", "CVE-2017-5130", "CVE-2017-5969", "CVE-2017-7132", "CVE-2017-7150", "CVE-2017-7170", "CVE-2017-7376", "CVE-2017-7659", "CVE-2017-7668", "CVE-2017-7679", "CVE-2017-9049", "CVE-2017-9050", "CVE-2017-9788", "CVE-2017-9789" ); script_bugtraq_id( 100249, 100286, 100913, 100914, 101177, 101274, 101482, 102100, 91816, 93055, 94650, 95076, 95077, 95078, 96188, 98568, 98601, 98877, 99132, 99134, 99135, 99137, 99170, 99551, 99568, 99569, 99938, 99939, 99940, 99941 ); script_xref(name:"APPLE-SA", value:"APPLE-SA-2017-10-31-2"); script_xref(name:"IAVA", value:"2017-A-0310"); script_name(english:"macOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-001 and 2017-004)"); script_summary(english:"Checks for the presence of Security Update 2017-004."); 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 10.11.6 or Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - 802.1X - apache - AppleScript - ATS - Audio - CFString - CoreText - curl - Dictionary Widget - file - Fonts - fsck_msdos - HFS - Heimdal - HelpViewer - ImageIO - Kernel - libarchive - Open Scripting Architecture - PCRE - Postfix - Quick Look - QuickTime - Remote Management - Sandbox - StreamingZip - tcpdump - Wi-Fi"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208221"); # https://lists.apple.com/archives/security-announce/2017/Oct/msg00001.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3881783e"); script_set_attribute(attribute:"solution", value: "Install Security Update 2017-004 or later for 10.11.x or Security Update 2017-001 or later for 10.12.x."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/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-2017-7376"); 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:"2016/07/18"); script_set_attribute(attribute:"patch_publication_date", value:"2017/10/31"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/03"); 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_set_attribute(attribute:"stig_severity", value:"II"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"MacOS X Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2017-2019 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\.(11\.6|12\.6)([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, "Mac OS X 10.11.6 or Mac OS X 10.12.6"); if ("10.11.6" >< os) patch = "2017-004"; else patch = "2017-001"; packages = get_kb_item_or_exit("Host/MacOSX/packages/boms", exit_code:1); sec_boms_report = pgrep( pattern:"^com\.apple\.pkg\.update\.(security\.|os\.SecUpd).*bom$", string:packages ); sec_boms = split(sec_boms_report, sep:'\n'); foreach package (sec_boms) { # Grab patch year and number match = pregmatch(pattern:"[^0-9](20[0-9][0-9])[-.]([0-9]{3})[^0-9]", string:package); if (empty_or_null(match[1]) || empty_or_null(match[2])) continue; patch_found = check_patch(year:int(match[1]), number:int(match[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, xss:TRUE);NASL family MacOS X Local Security Checks NASL id MACOS_10_13.NASL description The remote host is running a version of Mac OS X that is prior to 10.10.5, 10.11.x prior to 10.11.6, 10.12.x prior to 10.12.6, or is not macOS 10.13. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - AppSandbox - AppleScript - Application Firewall - ATS - Audio - CFNetwork - CFNetwork Proxies - CFString - Captive Network Assistant - CoreAudio - CoreText - DesktopServices - Directory Utility - file - Fonts - fsck_msdos - HFS - Heimdal - HelpViewer - IOFireWireFamily - ImageIO - Installer - Kernel - kext tools - libarchive - libc - libexpat - Mail - Mail Drafts - ntp - Open Scripting Architecture - PCRE - Postfix - Quick Look - QuickTime - Remote Management - SQLite - Sandbox - Screen Lock - Security - Spotlight - WebKit - zlib Note that successful exploitation of the most serious issues can result in arbitrary code execution. last seen 2020-06-01 modified 2020-06-02 plugin id 103598 published 2017-10-03 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/103598 title macOS < 10.13 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(103598); script_version("1.9"); script_cvs_date("Date: 2018/07/14 1:59:37"); script_cve_id( "CVE-2016-0736", "CVE-2016-2161", "CVE-2016-4736", "CVE-2016-5387", "CVE-2016-8740", "CVE-2016-8743", "CVE-2016-9042", "CVE-2016-9063", "CVE-2016-9840", "CVE-2016-9841", "CVE-2016-9842", "CVE-2016-9843", "CVE-2017-0381", "CVE-2017-3167", "CVE-2017-3169", "CVE-2017-6451", "CVE-2017-6452", "CVE-2017-6455", "CVE-2017-6458", "CVE-2017-6459", "CVE-2017-6460", "CVE-2017-6462", "CVE-2017-6463", "CVE-2017-6464", "CVE-2017-7074", "CVE-2017-7077", "CVE-2017-7078", "CVE-2017-7080", "CVE-2017-7082", "CVE-2017-7083", "CVE-2017-7084", "CVE-2017-7086", "CVE-2017-7114", "CVE-2017-7119", "CVE-2017-7121", "CVE-2017-7122", "CVE-2017-7123", "CVE-2017-7124", "CVE-2017-7125", "CVE-2017-7126", "CVE-2017-7127", "CVE-2017-7128", "CVE-2017-7129", "CVE-2017-7130", "CVE-2017-7132", "CVE-2017-7138", "CVE-2017-7141", "CVE-2017-7143", "CVE-2017-7144", "CVE-2017-7149", "CVE-2017-7150", "CVE-2017-7659", "CVE-2017-7668", "CVE-2017-7679", "CVE-2017-9233", "CVE-2017-9788", "CVE-2017-9789", "CVE-2017-10140", "CVE-2017-10989", "CVE-2017-11103", "CVE-2017-13782", "CVE-2017-13807", "CVE-2017-13808", "CVE-2017-13809", "CVE-2017-13810", "CVE-2017-13811", "CVE-2017-13812", "CVE-2017-13813", "CVE-2017-13814", "CVE-2017-13815", "CVE-2017-13816", "CVE-2017-13817", "CVE-2017-13818", "CVE-2017-13819", "CVE-2017-13820", "CVE-2017-13821", "CVE-2017-13822", "CVE-2017-13823", "CVE-2017-13824", "CVE-2017-13825", "CVE-2017-13827", "CVE-2017-13828", "CVE-2017-13829", "CVE-2017-13830", "CVE-2017-13831", "CVE-2017-13832", "CVE-2017-13833", "CVE-2017-13834", "CVE-2017-13836", "CVE-2017-13837", "CVE-2017-13838", "CVE-2017-13839", "CVE-2017-13840", "CVE-2017-13841", "CVE-2017-13842", "CVE-2017-13843", "CVE-2017-13846", "CVE-2017-13850", "CVE-2017-13851", "CVE-2017-13853", "CVE-2017-13854", "CVE-2017-13873", "CVE-2017-1000373" ); script_bugtraq_id( 91816, 93055, 94337, 94650, 95076, 95077, 95078, 95131, 95248, 97045, 97046, 97049, 97050, 97051, 97052, 97058, 97074, 97076, 97078, 97201, 99132, 99134, 99135, 99137, 99170, 99177, 99276, 99502, 99551, 99568, 99569, 100987, 100990, 100991, 100992, 100993, 100999, 102100 ); script_xref(name:"APPLE-SA", value:"APPLE-SA-2017-09-25-1"); script_name(english:"macOS < 10.13 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 Mac OS X that is prior to 10.10.5, 10.11.x prior to 10.11.6, 10.12.x prior to 10.12.6, or is not macOS 10.13. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - AppSandbox - AppleScript - Application Firewall - ATS - Audio - CFNetwork - CFNetwork Proxies - CFString - Captive Network Assistant - CoreAudio - CoreText - DesktopServices - Directory Utility - file - Fonts - fsck_msdos - HFS - Heimdal - HelpViewer - IOFireWireFamily - ImageIO - Installer - Kernel - kext tools - libarchive - libc - libexpat - Mail - Mail Drafts - ntp - Open Scripting Architecture - PCRE - Postfix - Quick Look - QuickTime - Remote Management - SQLite - Sandbox - Screen Lock - Security - Spotlight - WebKit - zlib Note that successful exploitation of the most serious issues can result in arbitrary code execution."); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208144"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208165"); # https://lists.apple.com/archives/security-announce/2017/Sep/msg00005.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9cfca404"); script_set_attribute(attribute:"solution", value: "Upgrade to macOS version 10.13 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/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:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/25"); script_set_attribute(attribute:"patch_publication_date", value:"2017/09/25"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/03"); 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) 2017-2018 Tenable Network Security, Inc."); 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"); 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]; fixed_version = "10.13"; # Patches exist for 10.10.5, OS X Yosemite v10.11.6 and OS X El Capitan v10.12.6 # https://support.apple.com/en-us/HT208221 # Do NOT mark them as vuln if ( # No 10.x patch below 10.10.5 ver_compare(ver:version, fix:'10.10.5', strict:FALSE) == -1 || # No 10.11.x patch below 10.11.6 ( version =~"^10\.11($|[^0-9])" && ver_compare(ver:version, fix:'10.11.6', strict:FALSE) == -1 ) || # No 10.12.x patch below 10.12.6 ( version =~"^10\.12($|[^0-9])" && ver_compare(ver:version, fix:'10.12.6', strict:FALSE) == -1 ) ) { security_report_v4( port:0, severity:SECURITY_HOLE, extra: '\n Installed version : ' + version + '\n Fixed version : ' + fixed_version + '\n' ); } else audit(AUDIT_INST_VER_NOT_VULN, "macOS / Mac OS X", version);