Vulnerabilities > CVE-2018-4276 - NULL Pointer Dereference vulnerability in Apple mac OS X

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
apple
CWE-476
nessus

Summary

A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.

Vulnerable Configurations

Part Description Count
OS
Apple
114

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_SECUPD2018-004.NASL
    descriptionThe 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id111136
    published2018-07-17
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/111136
    titlemacOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-004)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(111136);
      script_version("1.8");
      script_cvs_date("Date: 2019/06/19 15:17:43");
    
      script_cve_id(
        "CVE-2017-0898",
        "CVE-2017-10784",
        "CVE-2017-14033",
        "CVE-2017-14064",
        "CVE-2017-17405",
        "CVE-2017-17742",
        "CVE-2018-3665",
        "CVE-2018-4178",
        "CVE-2018-4248",
        "CVE-2018-4259",
        "CVE-2018-4268",
        "CVE-2018-4269",
        "CVE-2018-4276",
        "CVE-2018-4277",
        "CVE-2018-4280",
        "CVE-2018-4283",
        "CVE-2018-4285",
        "CVE-2018-4286",
        "CVE-2018-4287",
        "CVE-2018-4288",
        "CVE-2018-4289",
        "CVE-2018-4291",
        "CVE-2018-4293",
        "CVE-2018-5383",
        "CVE-2018-6797",
        "CVE-2018-6913",
        "CVE-2018-6914",
        "CVE-2018-8777",
        "CVE-2018-8778",
        "CVE-2018-8779",
        "CVE-2018-8780"
      );
    script_bugtraq_id(
        100853,
        100862,
        100868,
        100890,
        102204,
        103683,
        103684,
        103686,
        103693,
        103739,
        103767,
        103953,
        104460,
        104844,
        104879
      );
      script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-7-9-4");
    
      script_name(english:"macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-004)");
      script_summary(english:"Checks for the presence of Security Update 2018-004.");
    
      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.");
      script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208937");
      # https://lists.apple.com/archives/security-announce/2018/Jul/msg00005.html
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?981755ca");
      script_set_attribute(attribute:"solution", value:
    "Install Security Update 2018-004 or later for 10.11.x or
    Security Update 2018-004 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-2018-4268");
      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:"2018/07/09");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/07/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/17");
    
      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) 2018-2019 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");
    include("lists.inc");
    
    patch = "2018-004";
    applicable_macos_versions = ['10.11.6', '10.12.6'];
    
    # 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");
    
    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 (!collib::contains(item:version, list:applicable_macos_versions)) audit(AUDIT_OS_SP_NOT_VULN);
    
    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
      matches = pregmatch(pattern:"[^0-9](20[0-9][0-9])[-.]([0-9]{3})[^0-9]", string:package);
      if (empty_or_null(matches)) continue;
      if (empty_or_null(matches[1]) || empty_or_null(matches[2]))
        continue;
    
      patch_found = check_patch(year:int(matches[1]), number:int(matches[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);
    
  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_10_13_6.NASL
    descriptionThe remote host is running a version of macOS / Mac OS X that is 10.13.x prior to 10.13.6. It is, therefore, affected by multiple vulnerabilities. Note that successful exploitation of the most serious issues can result in arbitrary code execution.
    last seen2020-06-01
    modified2020-06-02
    plugin id111137
    published2018-07-17
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/111137
    titlemacOS 10.13.x < 10.13.6 Multiple Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(111137);
      script_version("1.8");
      script_cvs_date("Date: 2019/06/19 15:17:43");
    
      script_cve_id(
        "CVE-2017-0898",
        "CVE-2017-10784",
        "CVE-2017-14033",
        "CVE-2017-14064",
        "CVE-2017-17405",
        "CVE-2017-17742",
        "CVE-2018-3665",
        "CVE-2018-4178",
        "CVE-2018-4248",
        "CVE-2018-4259",
        "CVE-2018-4268",
        "CVE-2018-4269",
        "CVE-2018-4276",
        "CVE-2018-4277",
        "CVE-2018-4280",
        "CVE-2018-4283",
        "CVE-2018-4285",
        "CVE-2018-4286",
        "CVE-2018-4287",
        "CVE-2018-4288",
        "CVE-2018-4289",
        "CVE-2018-4291",
        "CVE-2018-4293",
        "CVE-2018-4456",
        "CVE-2018-4470",
        "CVE-2018-5383",
        "CVE-2018-6797",
        "CVE-2018-6913",
        "CVE-2018-6914",
        "CVE-2018-8777",
        "CVE-2018-8778",
        "CVE-2018-8779",
        "CVE-2018-8780"
      );
      script_bugtraq_id(
        100853,
        100862,
        100868,
        100890,
        102204,
        103683,
        103684,
        103686,
        103693,
        103739,
        103767,
        103953,
        104460,
        104844,
        106779
      );
      script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-7-9-4");
    
      script_name(english:"macOS 10.13.x < 10.13.6 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 10.13.6. 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/HT208937");
      # https://lists.apple.com/archives/security-announce/2018/Jul/msg00005.html
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?981755ca");
      # https://lists.apple.com/archives/security-announce/2018/Jul/msg00008.html 
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9f04312a");
      script_set_attribute(attribute:"solution", value:
    "Upgrade to macOS version 10.13.6 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:"cvss_score_source", value:"CVE-2018-4259");
      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:"2018/07/09");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/07/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/17");
    
      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 = "10.13.6";
    
    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);