Vulnerabilities > CVE-2017-7045 - Improper Input Validation vulnerability in Apple mac OS X

047910
CVSS 5.5 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
NONE
local
low complexity
apple
CWE-20
nessus

Summary

An issue was discovered in certain Apple products. macOS before 10.12.6 is affected. The issue involves the "Intel Graphics Driver" component. It allows attackers to bypass intended memory-read restrictions via a crafted app.

Vulnerable Configurations

Part Description Count
OS
Apple
117

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

NASL familyMacOS X Local Security Checks
NASL idMACOSX_SECUPD2017-003.NASL
descriptionThe remote host is running Mac OS X 10.10.5, Mac OS X 10.11.6, or macOS 10.12.5 and is missing a security update. It is therefore, affected by multiple vulnerabilities : - An overflow condition exists in the curl component in the dprintf_formatf() function that is triggered when handling floating point conversion. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-9586) - A flaw exits in the curl component in the randit() function within file lib/rand.c due to improper initialization of the 32-bit random value, which is used, for example, to generate Digest and NTLM authentication nonces, resulting in weaker cryptographic operations than expected. (CVE-2016-9594) - A flaw exists in the curl component in the allocate_conn() function in lib/url.c when using the OCSP stapling feature for checking a X.509 certificate revocation status. The issue is triggered as the request option for OCSP stapling is not properly passed to the TLS library, resulting in no error being returned even when no proof of the validity of the certificate could be provided. A man-in-the-middle attacker can exploit this to provide a revoked certificate. (CVE-2017-2629) - A remote code execution vulnerability exists in the CoreAudio component due to improper validation of user-supplied input when handling movie files. An unauthenticated, remote attacker can exploit this, by convincing a user to play a specially crafted movie file, to cause a denial of service condition or the execution of arbitrary code. (CVE-2017-7008) - A memory corruption issue exists in the IOUSBFamily component due to improper validation of user-supplied input. A local attacker can exploit this, via a specially crafted application, to cause a denial of service condition or the execution of arbitrary code. (CVE-2017-7009) - Multiple out-of-bounds read errors exist in the libxml2 component due to improper handling of specially crafted XML documents. An unauthenticated, remote attacker can exploit these to disclose user information. (CVE-2017-7010, CVE-2017-7013) - Multiple memory corruption issues exist in the Intel Graphics Driver component due to improper validation of input. A local attacker can exploit these issues to execute arbitrary code with elevated privileges. (CVE-2017-7014, CVE-2017-7017, CVE-2017-7035, CVE-2017-7044) - A remote code execution vulnerability exists in the Audio component due to improper validation of user-supplied input when handling audio files. An unauthenticated, remote attacker can exploit this, by convincing a user to play a specially crafted audio file, to execute arbitrary code. (CVE-2017-7015) - Multiple remote code execution vulnerabilities exist in the afclip component due to improper validation of user-supplied input when handling audio files. An unauthenticated, remote attacker can exploit these vulnerabilities, by convincing a user to play a specially crafted audio file, to execute arbitrary code. (CVE-2017-7016, CVE-2017-7033) - A memory corruption issue exists in the AppleGraphicsPowerManagement component due to improper validation of input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code with system privileges. (CVE-2017-7021) - Multiple memory corruption issues exist in the kernel due to improper validation of input. A local attacker can exploit these issues to cause a denial of service condition or the execution of arbitrary code with system privileges. (CVE-2017-7022, CVE-2017-7024, CVE-2017-7026) - Multiple memory corruption issues exist in the kernel due to improper validation of input. A local attacker can exploit these issues to cause a denial of service condition or the execution of arbitrary code with kernel privileges. (CVE-2017-7023, CVE-2017-7025, CVE-2017-7027, CVE-2017-7069) - Multiple unspecified flaws exist in the kernel due to a failure to properly sanitize input. A local attacker can exploit these issues, via a specially crafted application, to disclose restricted memory contents. (CVE-2017-7028, CVE-2017-7029, CVE-2017-7067) - A flaw exists in the Foundation component due to improper validation of input. A unauthenticated, remote attacker can exploit this, by convincing a user to open specially crafted file, to execute arbitrary code. (CVE-2017-7031) - A memory corruption issue exists in the
last seen2020-06-01
modified2020-06-02
plugin id101957
published2017-07-25
reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/101957
titlemacOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-003)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(101957);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/12");

  script_cve_id(
    "CVE-2016-9586",
    "CVE-2016-9594",
    "CVE-2017-2629",
    "CVE-2017-7008",
    "CVE-2017-7009",
    "CVE-2017-7010",
    "CVE-2017-7013",
    "CVE-2017-7014",
    "CVE-2017-7015",
    "CVE-2017-7016",
    "CVE-2017-7017",
    "CVE-2017-7021",
    "CVE-2017-7022",
    "CVE-2017-7023",
    "CVE-2017-7024",
    "CVE-2017-7025",
    "CVE-2017-7026",
    "CVE-2017-7027",
    "CVE-2017-7028",
    "CVE-2017-7029",
    "CVE-2017-7031",
    "CVE-2017-7032",
    "CVE-2017-7033",
    "CVE-2017-7035",
    "CVE-2017-7036",
    "CVE-2017-7044",
    "CVE-2017-7045",
    "CVE-2017-7047",
    "CVE-2017-7050",
    "CVE-2017-7051",
    "CVE-2017-7054",
    "CVE-2017-7062",
    "CVE-2017-7067",
    "CVE-2017-7068",
    "CVE-2017-7069",
    "CVE-2017-7468",
    "CVE-2017-9417"
  );
  script_bugtraq_id(
    95019,
    95094,
    96382,
    97962,
    99482,
    99879,
    99880,
    99882,
    99883,
    99889
  );
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2017-05-15-1");

  script_name(english:"macOS and Mac OS X Multiple Vulnerabilities (Security Update 2017-003)");
  script_summary(english:"Checks for the presence of Security Update 2017-003.");

  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 10.10.5, Mac OS X 10.11.6, or
macOS 10.12.5 and is missing a security update. It is therefore,
affected by multiple vulnerabilities :

  - An overflow condition exists in the curl component in
    the dprintf_formatf() function that is triggered when
    handling floating point conversion. An unauthenticated,
    remote attacker can exploit this to cause a denial of
    service condition or the execution of arbitrary code.
    (CVE-2016-9586)

  - A flaw exits in the curl component in the randit()
    function within file lib/rand.c due to improper
    initialization of the 32-bit random value, which is
    used, for example, to generate Digest and NTLM
    authentication nonces, resulting in weaker cryptographic
    operations than expected. (CVE-2016-9594)

  - A flaw exists in the curl component in the
    allocate_conn() function in lib/url.c when using the
    OCSP stapling feature for checking a X.509 certificate
    revocation status. The issue is triggered as the request
    option for OCSP stapling is not properly passed to the
    TLS library, resulting in no error being returned even
    when no proof of the validity of the certificate could
    be provided. A man-in-the-middle attacker can exploit
    this to provide a revoked certificate. (CVE-2017-2629)

  - A remote code execution vulnerability exists in the
    CoreAudio component due to improper validation of
    user-supplied input when handling movie files. An
    unauthenticated, remote attacker can exploit this, by
    convincing a user to play a specially crafted movie
    file, to cause a denial of service condition or the
    execution of arbitrary code. (CVE-2017-7008)

  - A memory corruption issue exists in the IOUSBFamily
    component due to improper validation of user-supplied
    input. A local attacker can exploit this, via a
    specially crafted application, to cause a denial of
    service condition or the execution of arbitrary code.
    (CVE-2017-7009)

  - Multiple out-of-bounds read errors exist in the libxml2
    component due to improper handling of specially crafted
    XML documents. An unauthenticated, remote attacker can
    exploit these to disclose user information.
    (CVE-2017-7010, CVE-2017-7013)

  - Multiple memory corruption issues exist in the Intel
    Graphics Driver component due to improper validation of
    input. A local attacker can exploit these issues to
    execute arbitrary code with elevated privileges.
    (CVE-2017-7014, CVE-2017-7017, CVE-2017-7035,
    CVE-2017-7044)

  - A remote code execution vulnerability exists in the
    Audio component due to improper validation of
    user-supplied input when handling audio files. An
    unauthenticated, remote attacker can exploit this, by
    convincing a user to play a specially crafted audio
    file, to execute arbitrary code. (CVE-2017-7015)

  - Multiple remote code execution vulnerabilities exist in
    the afclip component due to improper validation of
    user-supplied input when handling audio files. An
    unauthenticated, remote attacker can exploit these
    vulnerabilities, by convincing a user to play a
    specially crafted audio file, to execute arbitrary
    code. (CVE-2017-7016, CVE-2017-7033)

  - A memory corruption issue exists in the
    AppleGraphicsPowerManagement component due to improper
    validation of input. A local attacker can exploit this
    to cause a denial of service condition or the execution
    of arbitrary code with system privileges.
    (CVE-2017-7021)

  - Multiple memory corruption issues exist in the kernel
    due to improper validation of input. A local attacker
    can exploit these issues to cause a denial of service
    condition or the execution of arbitrary code with system
    privileges. (CVE-2017-7022, CVE-2017-7024,
    CVE-2017-7026)

  - Multiple memory corruption issues exist in the kernel
    due to improper validation of input. A local attacker
    can exploit these issues to cause a denial of service
    condition or the execution of arbitrary code with kernel
    privileges. (CVE-2017-7023, CVE-2017-7025,
    CVE-2017-7027, CVE-2017-7069)

  - Multiple unspecified flaws exist in the kernel due to a
    failure to properly sanitize input. A local attacker can
    exploit these issues, via a specially crafted
    application, to disclose restricted memory contents.
    (CVE-2017-7028, CVE-2017-7029, CVE-2017-7067)

  - A flaw exists in the Foundation component due to
    improper validation of input. A unauthenticated, remote
    attacker can exploit this, by convincing a user to open
    specially crafted file, to execute arbitrary code.
    (CVE-2017-7031)

  - A memory corruption issue exists in the 'kext tools'
    component due to improper validation of input. A local
    attacker can exploit this to execute arbitrary code with
    elevated privileges. (CVE-2017-7032)

  - Multiple unspecified flaws exist in the Intel Graphics
    Driver component due to a failure to properly sanitize
    input. A local attacker can exploit these issues, via a
    specially crafted application, to disclose restricted
    memory contents. (CVE-2017-7036, CVE-2017-7045)

  - A memory corruption issue exists in the libxpc component
    due to improper validation of input. A local attacker
    can exploit this issue, via a specifically crafted
    application, to cause a denial of service condition or
    the execution of arbitrary code with system privileges.
    (CVE-2017-7047)

  - Multiple memory corruption issues exist in the
    Bluetooth component due to improper validation of input.
    A local attacker can exploit these issues to execute
    arbitrary code with system privileges. (CVE-2017-7050,
    CVE-2017-7051)

  - A memory corruption issue exists in the Bluetooth
    component due to improper validation of input. A local
    attacker can exploit these issues to execute arbitrary
    code with system privileges. (CVE-2017-7054)

  - A buffer overflow condition exists in the Contacts
    component due to improper validation of user-supplied
    input. An unauthenticated, remote attacker can exploit
    this to cause a denial of service condition or the
    execution of arbitrary code. (CVE-2017-7062)

  - A buffer overflow condition exists in the libarchive
    component due to improper validation of user-supplied
    input. An unauthenticated, remote attacker can exploit
    this, via a specially crafted archive file, to cause a
    denial of service condition or the execution of
    arbitrary code. (CVE-2017-7068)

  - A certificate validation bypass vulnerability exists in
    the curl component due to the program attempting to
    resume TLS sessions even if the client certificate
    fails. An unauthenticated, remote attacker can exploit
    this to bypass validation mechanisms. (CVE-2017-7468)

  - A memory corruption issue exists in the Broadcom BCM43xx
    family Wi-Fi Chips component that allows an
    unauthenticated, remote attacker to execute arbitrary
    code. (CVE-2017-9417)");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT207922");
  script_set_attribute(attribute:"see_also", value:"http://seclists.org/fulldisclosure/2017/May/47");
  script_set_attribute(attribute:"solution", value:
"Install Security Update 2017-003 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: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-2017-7069");

  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:"2016/07/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/07/25");

  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\.(10\.5|11\.6|12\.5)([^0-9]|$)", string:os))
  audit(AUDIT_OS_NOT, "Mac OS X 10.10.5 or Mac OS X 10.11.6 or Mac OS X 10.12.5");

if ("10.10.5" >< os || "10.11.6" >< os || "10.12.5" >< os) patch = "2017-003";

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 = eregmatch(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);