Vulnerabilities > CVE-2017-7003 - Improper Input Validation vulnerability in Apple products

047910
CVSS 5.5 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
local
low complexity
apple
CWE-20
nessus
NVD
Published: 2018-04-03
Updated: 2019-03-08

Summary

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. macOS before 10.12.5 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (application crash) via a crafted file.

Vulnerable Configurations

Part Description Count
OS
Apple
259

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 familyMisc.
    NASL idAPPLETV_10_2_1.NASL
    descriptionAccording to its banner, the version of Apple TV on the remote device is prior to 10.2.1. It is, therefore, affected by multiple vulnerabilities : - A memory corruption issue exists in the WebKit Web Inspector component that allows an unauthenticated, remote attacker to execute arbitrary code. (CVE-2017-2499) - An unspecified race condition exists in the Kernel component that allows a local attacker to execute arbitrary code with kernel-level privileges. (CVE-2017-2501) - An information disclosure vulnerability exists in the CoreAudio component due to improper sanitization of certain input. A local attacker can exploit this to read the contents of restricted memory. (CVE-2017-2502) - A universal cross-site scripting (XSS) vulnerability exists in WebKit due to a logic flaw when handling WebKit Editor commands. An unauthenticated, remote attacker can exploit this, via a specially crafted web page, to execute arbitrary script code in a user
    last seen2020-06-01
    modified2020-06-02
    plugin id100256
    published2017-05-17
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100256
    titleApple TV < 10.2.1 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(100256);
  script_version("1.9");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id(
    "CVE-2017-2499",
    "CVE-2017-2501",
    "CVE-2017-2502",
    "CVE-2017-2504",
    "CVE-2017-2505",
    "CVE-2017-2507",
    "CVE-2017-2513",
    "CVE-2017-2515",
    "CVE-2017-2518",
    "CVE-2017-2519",
    "CVE-2017-2520",
    "CVE-2017-2521",
    "CVE-2017-2524",
    "CVE-2017-2525",
    "CVE-2017-2530",
    "CVE-2017-2531",
    "CVE-2017-2536",
    "CVE-2017-2549",
    "CVE-2017-6979",
    "CVE-2017-6980",
    "CVE-2017-6984",
    "CVE-2017-6987",
    "CVE-2017-6989",
    "CVE-2017-7003",
    "CVE-2017-7005"
  );
  script_bugtraq_id(
    98454,
    98455,
    98456,
    98457,
    98468,
    98473
  );

  script_name(english:"Apple TV < 10.2.1 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 10.2.1. It is, therefore, affected by multiple
vulnerabilities :

  - A memory corruption issue exists in the WebKit Web
    Inspector component that allows an unauthenticated,
    remote attacker to execute arbitrary code.
    (CVE-2017-2499)

  - An unspecified race condition exists in the Kernel
    component that allows a local attacker to execute
    arbitrary code with kernel-level privileges.
    (CVE-2017-2501)

  - An information disclosure vulnerability exists in the
    CoreAudio component due to improper sanitization of
    certain input. A local attacker can exploit this to read
    the contents of restricted memory. (CVE-2017-2502)

  - A universal cross-site scripting (XSS) vulnerability
    exists in WebKit due to a logic flaw when handling
    WebKit Editor commands. An unauthenticated, remote
    attacker can exploit this, via a specially crafted web
    page, to execute arbitrary script code in a user's
    browser session. (CVE-2017-2504)

  - Multiple memory corruption issues exist in WebKit due to
    improper validation of certain input. An
    unauthenticated, remote attacker can exploit these to
    execute arbitrary code. (CVE-2017-2505, CVE-2017-2515,
    CVE-2017-2521, CVE-2017-2530, CVE-2017-2531,
    CVE-2017-6980, CVE-2017-6984)

  - Multiple information disclosure vulnerabilities exist
    in the Kernel component due to improper sanitization of
    certain input. A local attacker can exploit these to
    read the contents of restricted memory. (CVE-2017-2507,
    CVE-2017-6987)

  - A use-after-free error exists in the SQLite component
    when handling SQL queries. An unauthenticated, remote
    attacker can exploit this to deference already freed
    memory, resulting in the execution of arbitrary code.
    (CVE-2017-2513)

  - Multiple buffer overflow conditions exist in the SQLite
    component due to the improper validation of certain
    input. An unauthenticated, remote attacker can exploit
    these, via a specially crafted SQL query, to execute
    arbitrary code. (CVE-2017-2518, CVE-2017-2520)

  - A memory corruption issue exists in the SQLite component
    when handling SQL queries. An unauthenticated, remote
    attacker can exploit this, via a specially crafted
    query, to execute arbitrary code. (CVE-2017-2519)

  - An unspecified memory corruption issue exists in the
    TextInput component when parsing specially crafted data.
    An unauthenticated, remote attacker can exploit this to
    execute arbitrary code. (CVE-2017-2524)

  - A use-after-free error exists in WebKit when handling
    RenderLayer objects. An unauthenticated, remote attacker
    can exploit this, via a specially crafted web page, to
    deference already freed memory, resulting in the
    execution of arbitrary code. (CVE-2017-2525)

  - Multiple unspecified flaws exist in WebKit that allow
    an unauthenticated, remote attacker to corrupt memory
    and execute arbitrary code by using specially crafted
    web content. (CVE-2017-2536)

  - A universal cross-site scripting (XSS) vulnerability
    exists in WebKit due to a logic error when handling
    frame loading. An unauthenticated, remote attacker can
    exploit this, via a specially crafted web page, to
    execute arbitrary code in a user's browser session.
    (CVE-2017-2549)

  - An unspecified flaw exists in the IOSurface component
    that allows a local attacker to corrupt memory and
    execute arbitrary code with kernel-level privileges.
    (CVE-2017-6979)

  - An unspecified flaw exists in the AVEVideoEncoder
    component that allows a local attacker, via a specially
    crafted application, to corrupt memory and execute
    arbitrary code with kernel-level privileges.
    (CVE-2017-6989)

  - A denial of service vulnerability exists in the
    CoreText component due to improper validation of
    user-supplied input. An unauthenticated, remote attacker
    can exploit this, via a specially crafted file, to crash
    an application. (CVE-2017-7003)

  - A memory corruption issue exists in the JavaScriptCore
    component due to improper validation of user-supplied
    input. An unauthenticated, remote attacker can exploit
    this, via specially crafted web content, to cause a
    denial of service condition or the execution of
    arbitrary code. (CVE-2017-7005)

Note that only 4th generation models are affected by these
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT207801");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apple TV version 10.2.1 or later. Note that this update is
only available for 4th 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: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-2017-6989");

  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:"2017/05/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/17");

  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) 2017-2019 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.');

fixed_build = "14W585a";
tvos_ver = '10.2.1';

# determine gen from the model
gen = APPLETV_MODEL_GEN[model];

appletv_check_version(
  build          : build,
  fix            : fixed_build,
  affected_gen   : 4,
  fix_tvos_ver   : tvos_ver,
  model          : model,
  gen            : gen,
  port           : port,
  url            : url,
  severity       : SECURITY_HOLE,
  xss            : TRUE
);
  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_10_12_5.NASL
    descriptionThe remote host is running a version of macOS that is 10.12.x prior to 10.12.5. It is, therefore, affected by multiple vulnerabilities : - Multiple memory corruption issues exist in the Kernel component that allow a local attacker to gain kernel-level privileges. (CVE-2017-2494, CVE-2017-2546) - A state management flaw exists in the iBooks component due to improper handling of URLs. An unauthenticated, remote attacker can exploit this, via a specially crafted book, to open arbitrary websites without user permission. (CVE-2017-2497) - A local privilege escalation vulnerability exists in the Kernel component due to a race condition. A local attacker can exploit this to execute arbitrary code with kernel-level privileges. (CVE-2017-2501) - An information disclosure vulnerability exists in the CoreAudio component due to improper sanitization of user-supplied input. A local attacker can exploit this to read the contents of restricted memory. (CVE-2017-2502) - A memory corruption issue exists in the Intel graphics driver component that allows a local attacker to execute arbitrary code with kernel-level privileges. CVE-2017-2503) - Multiple information disclosure vulnerabilities exist in the Kernel component due to improper sanitization of user-supplied input. A local attacker can exploit these to read the contents of restricted memory. (CVE-2017-2507, CVE-2017-2509, CVE-2017-2516, CVE-2017-6987) - A memory corruption issue exists in the Sandbox component that allows an unauthenticated, remote attacker to escape an application sandbox. (CVE-2017-2512) - A use-after-free error exists in the SQLite component when handling SQL queries. An unauthenticated, remote attacker can exploit this to deference already freed memory, resulting in the execution of arbitrary code. (CVE-2017-2513) - Multiple buffer overflow conditions exist in the SQLite component due to the improper validation of user-supplied input. An unauthenticated, remote attacker can exploit these, via a specially crafted SQL query, to execute arbitrary code. (CVE-2017-2518, CVE-2017-2520) - A memory corruption issue exists in the SQLite component when handling SQL queries. An unauthenticated, remote attacker can exploit this, via a specially crafted SQL query, to execute arbitrary code. (CVE-2017-2519) - An unspecified memory corruption issue exists in the TextInput component when parsing specially crafted data. An unauthenticated, remote attacker can exploit this to execute arbitrary code. (CVE-2017-2524) - A flaw exists in the CoreAnimation component when handling specially crafted data. An unauthenticated, remote attacker can exploit this to execute arbitrary code. (CVE-2017-2527) - A race condition exists in the DiskArbitration feature that allow a local attacker to gain system-level privileges. (CVE-2017-2533) - An unspecified flaw exists in the Speech Framework that allows a local attacker to escape an application sandbox. (CVE-2017-2534) - A resource exhaustion issue exists in the Security component due to improper validation of user-supplied input. A local attacker can exploit this to exhaust resources and escape an application sandbox. (CVE-2017-2535) - Multiple memory corruption issues exist in the WindowServer component that allow a local attacker to execute arbitrary code with system-level privileges. (CVE-2017-2537, CVE-2017-2548) - An information disclosure vulnerability exists in WindowServer component in the _XGetConnectionPSN() function due to improper validation of user-supplied input. A local attacker can exploit this to read the contents of restricted memory. (CVE-2017-2540) - A stack-based buffer overflow condition exists in the WindowServer component in the _XGetWindowMovementGroup() function due to improper validation of user-supplied input. A local attacker can exploit this to execute arbitrary code with the privileges of WindowServer. (CVE-2017-2541) - Multiple memory corruption issues exist in the Multi-Touch component that allow a local attacker to execute arbitrary code with kernel-level privileges. (CVE-2017-2542, CVE-2017-2543) - A use-after-free error exists in the IOGraphic component that allows a local attacker to execute arbitrary code with kernel-level privileges. (CVE-2017-2545) - A flaw exists in the Speech Framework, specifically within the speechsynthesisd service, due to improper validation of unsigned dynamic libraries (.dylib) before being loaded. A local attacker can exploit this to bypass the application
    last seen2020-06-01
    modified2020-06-02
    plugin id100270
    published2017-05-18
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100270
    titlemacOS 10.12.x < 10.12.5 Multiple Vulnerabilities

References