Vulnerabilities > CVE-2017-7172 - 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 11.2 is affected. macOS before 10.13.2 is affected. iCloud before 7.2 on Windows is affected. iTunes before 12.7.2 on Windows is affected. tvOS before 11.2 is affected. watchOS before 4.2 is affected. The issue involves the "CFNetwork Session" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
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.
Nessus
NASL family MacOS X Local Security Checks NASL id MACOS_10_13_2.NASL description The remote host is running a version of Mac OS X that is 10.13.x prior to 10.13.2. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - curl - Directory Utility - IOAcceleratorFamily - IOKit - Intel Graphics Driver - Kernel - Mail - Mail Drafts - OpenSSL - Screen Sharing Server 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 105080 published 2017-12-07 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/105080 title macOS 10.13.x < 10.13.2 Multiple Vulnerabilities (Meltdown) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(105080); script_version("1.12"); script_cvs_date("Date: 2019/06/19 15:17:43"); script_cve_id( "CVE-2017-1000254", "CVE-2017-13847", "CVE-2017-13848", "CVE-2017-13855", "CVE-2017-13858", "CVE-2017-13860", "CVE-2017-13862", "CVE-2017-13865", "CVE-2017-13867", "CVE-2017-13868", "CVE-2017-13869", "CVE-2017-13871", "CVE-2017-13872", "CVE-2017-13875", "CVE-2017-13876", "CVE-2017-13878", "CVE-2017-13883", "CVE-2017-13886", "CVE-2017-13887", "CVE-2017-13892", "CVE-2017-13904", "CVE-2017-13905", "CVE-2017-13911", "CVE-2017-15422", "CVE-2017-3735", "CVE-2017-5754", "CVE-2017-7151", "CVE-2017-7154", "CVE-2017-7155", "CVE-2017-7158", "CVE-2017-7159", "CVE-2017-7162", "CVE-2017-7163", "CVE-2017-7171", "CVE-2017-7172", "CVE-2017-7173", "CVE-2017-9798" ); script_bugtraq_id( 100515, 100872, 101115, 101981, 102097, 102098, 102099, 102100, 102378, 103134, 103135 ); script_xref(name:"IAVA", value:"2018-A-0019"); script_name(english:"macOS 10.13.x < 10.13.2 Multiple Vulnerabilities (Meltdown)"); 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 10.13.x prior to 10.13.2. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - curl - Directory Utility - IOAcceleratorFamily - IOKit - Intel Graphics Driver - Kernel - Mail - Mail Drafts - OpenSSL - Screen Sharing Server 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/HT208331"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208394"); script_set_attribute(attribute:"solution", value: "Upgrade to macOS version 10.13.2 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: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-2017-7172"); 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 Root Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/06"); script_set_attribute(attribute:"patch_publication_date", value:"2017/12/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/07"); 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_set_attribute(attribute:"stig_severity", value:"I"); 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", "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 = "10.13.2"; if (version !~"^10\.13($|[^0-9])") audit(AUDIT_OS_NOT, "macOS 10.13.x"); if (ver_compare(ver:version, fix:'10.13.2', 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);NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2017-005.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 : - apache - curl - IOAcceleratorFamily - IOKit - Kernel - OpenSSL - Screen Sharing Server last seen 2020-06-01 modified 2020-06-02 plugin id 105081 published 2017-12-07 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/105081 title macOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-002 and 2017-005) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(105081); script_version("1.10"); script_cvs_date("Date: 2019/11/12"); script_cve_id( "CVE-2017-3735", "CVE-2017-7154", "CVE-2017-7158", "CVE-2017-7159", "CVE-2017-7162", "CVE-2017-7172", "CVE-2017-7173", "CVE-2017-9798", "CVE-2017-12837", "CVE-2017-13847", "CVE-2017-13855", "CVE-2017-13862", "CVE-2017-13867", "CVE-2017-13868", "CVE-2017-13869", "CVE-2017-13872", "CVE-2017-13904", "CVE-2017-15422", "CVE-2017-1000254" ); script_bugtraq_id( 100515, 100860, 100872, 101115, 101981, 102097, 102098, 102100, 103134, 103135 ); script_name(english:"macOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-002 and 2017-005)"); script_summary(english:"Checks for the presence of Security Update 2017-002 / 2017-005."); 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 : - apache - curl - IOAcceleratorFamily - IOKit - Kernel - OpenSSL - Screen Sharing Server"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208331"); script_set_attribute(attribute:"solution", value: "Install Security Update 2017-005 or later for 10.11.x or Security Update 2017-002 or later for 10.12.x."); 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:F/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:F/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7172"); 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 Root Privilege Escalation'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/06"); script_set_attribute(attribute:"patch_publication_date", value:"2017/12/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/07"); 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) 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 = "2017-005"; else patch = "2017-002"; 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);