Vulnerabilities > CVE-2018-4237 - Unspecified 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 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "libxpc" component. It allows attackers to gain privileges via a crafted app that leverages a logic error.
Vulnerable Configurations
Exploit-Db
| file | exploits/macos/local/45916.rb |
| id | EDB-ID:45916 |
| last seen | 2018-11-30 |
| modified | 2018-11-29 |
| platform | macos |
| port | |
| published | 2018-11-29 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/45916 |
| title | Mac OS X - libxpc MITM Privilege Escalation (Metasploit) |
| type | local |
Metasploit
| description | This module exploits a vulnerablity in libxpc on macOS <= 10.13.3 The task_set_special_port API allows callers to overwrite their bootstrap port, which is used to communicate with launchd. This port is inherited across forks: child processes will use the same bootstrap port as the parent. By overwriting the bootstrap port and forking a child processes, we can now gain a MitM position between our child and launchd. To gain root we target the sudo binary and intercept its communication with opendirectoryd, which is used by sudo to verify credentials. We modify the replies from opendirectoryd to make it look like our password was valid. |
| id | MSF:EXPLOIT/OSX/LOCAL/LIBXPC_MITM_SSUDO |
| last seen | 2020-06-11 |
| modified | 2018-11-20 |
| published | 2018-11-15 |
| references | |
| reporter | Rapid7 |
| source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/osx/local/libxpc_mitm_ssudo.rb |
| title | Mac OS X libxpc MITM Privilege Escalation |
Nessus
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 );NASL family MacOS X Local Security Checks NASL id MACOS_10_13_5.NASL description The remote host is running a version of macOS / Mac OS X that is 10.13.x prior to 10.13.5. It is, therefore, affected by multiple vulnerabilities. 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 110324 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/110324 title macOS 10.13.x < 10.13.5 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(110324); script_version("1.11"); script_cvs_date("Date: 2019/11/04"); script_cve_id( "CVE-2018-4141", "CVE-2018-4159", "CVE-2018-4180", "CVE-2018-4181", "CVE-2018-4182", "CVE-2018-4183", "CVE-2018-4184", "CVE-2018-4193", "CVE-2018-4194", "CVE-2018-4196", "CVE-2018-4198", "CVE-2018-4202", "CVE-2018-4211", "CVE-2018-4217", "CVE-2018-4219", "CVE-2018-4221", "CVE-2018-4223", "CVE-2018-4224", "CVE-2018-4225", "CVE-2018-4226", "CVE-2018-4227", "CVE-2018-4228", "CVE-2018-4229", "CVE-2018-4230", "CVE-2018-4234", "CVE-2018-4235", "CVE-2018-4236", "CVE-2018-4237", "CVE-2018-4240", "CVE-2018-4241", "CVE-2018-4242", "CVE-2018-4243", "CVE-2018-4249", "CVE-2018-4251", "CVE-2018-4253", "CVE-2018-4254", "CVE-2018-4255", "CVE-2018-4256", "CVE-2018-4257", "CVE-2018-4258", "CVE-2018-4404", "CVE-2018-4478", "CVE-2018-5383", "CVE-2018-7584" ); script_bugtraq_id( 103204, 104378, 104879, 104888, 104889, 104897, 107135 ); script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-7-23-2"); script_name(english:"macOS 10.13.x < 10.13.5 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 10.13.x prior to 10.13.5. It is, therefore, affected by multiple vulnerabilities. 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/HT208849"); # https://lists.apple.com/archives/security-announce/2018/Jul/msg00009.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?68a789b4"); script_set_attribute(attribute:"solution", value: "Upgrade to macOS version 10.13.5 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:H/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:H/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-4258"); 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:'Safari Proxy Object Type Confusion'); 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:"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) 2018-2019 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"); 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]; fix = "10.13.5"; if (version !~"^10\.13($|[^0-9])") audit(AUDIT_OS_NOT, "macOS 10.13.x"); if (ver_compare(ver:version, 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);
Packetstorm
| data source | https://packetstormsecurity.com/files/download/150488/libxpc_mitm_ssudo.rb.txt |
| id | PACKETSTORM:150488 |
| last seen | 2018-11-29 |
| published | 2018-11-28 |
| reporter | saelo |
| source | https://packetstormsecurity.com/files/150488/Mac-OS-X-libxpc-MITM-Privilege-Escalation.html |
| title | Mac OS X libxpc MITM Privilege Escalation |
References
- http://www.securitytracker.com/id/1041027
- http://www.securitytracker.com/id/1041027
- https://support.apple.com/HT208848
- https://support.apple.com/HT208848
- https://support.apple.com/HT208849
- https://support.apple.com/HT208849
- https://support.apple.com/HT208850
- https://support.apple.com/HT208850
- https://support.apple.com/HT208851
- https://support.apple.com/HT208851
- https://www.exploit-db.com/exploits/45916/
- https://www.exploit-db.com/exploits/45916/