Vulnerabilities > CVE-2017-2526 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apple Safari

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
apple
CWE-119
nessus
NVD
Published: 2017-05-22
Updated: 2017-07-08

Summary

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Vulnerable Configurations

Part Description Count
Application
Apple
151
OS
Apple
158

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 familyMacOS X Local Security Checks
    NASL idMACOSX_SAFARI10_1_1.NASL
    descriptionThe version of Apple Safari installed on the remote macOS or Mac OS X host is prior to 10.1.1. It is, therefore, affected by multiple vulnerabilities : - An unspecified flaw exists in the history menu functionality. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2017-2495) - Multiple memory corruption issues exist in the WebKit component due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit these issues, by convincing a user to visit a specially crafted website, to execute arbitrary code. (CVE-2017-2496, CVE-2017-2505, CVE-2017-2506, CVE-2017-2514, CVE-2017-2515, CVE-2017-2521, CVE-2017-2525, CVE-2017-2526, CVE-2017-2530, CVE-2017-2531, CVE-2017-2538, CVE-2017-2539, CVE-2017-2544, CVE-2017-2547, CVE-2017-6980, CVE-2017-6984) - 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 address bar spoofing vulnerability exists due to improper state management. An unauthenticated, remote attacker can exploit this to spoof the address in the address bar. (CVE-2017-2500, CVE-2017-2511) - Multiple universal cross-site scripting (XSS) vulnerabilities exist in WebKit due to improper handling of WebKit Editor commands, container nodes, pageshow events, frame loading, and cached frames. 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 id100355
    published2017-05-23
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100355
    titlemacOS : Apple Safari < 10.1.1 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(100355);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id(
    "CVE-2017-2495",
    "CVE-2017-2496",
    "CVE-2017-2499",
    "CVE-2017-2500",
    "CVE-2017-2504",
    "CVE-2017-2505",
    "CVE-2017-2506",
    "CVE-2017-2508",
    "CVE-2017-2510",
    "CVE-2017-2511",
    "CVE-2017-2514",
    "CVE-2017-2515",
    "CVE-2017-2521",
    "CVE-2017-2525",
    "CVE-2017-2526",
    "CVE-2017-2528",
    "CVE-2017-2530",
    "CVE-2017-2531",
    "CVE-2017-2536",
    "CVE-2017-2538",
    "CVE-2017-2539",
    "CVE-2017-2544",
    "CVE-2017-2547",
    "CVE-2017-2549",
    "CVE-2017-6980",
    "CVE-2017-6984"
  );
  script_bugtraq_id(
    98454,
    98455,
    98456,
    98470,
    98473,
    98474
  );
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2017-05-15-7");

  script_name(english:"macOS : Apple Safari < 10.1.1 Multiple Vulnerabilities");
  script_summary(english:"Checks the Safari version.");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is
affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Apple Safari installed on the remote macOS or Mac OS X
host is prior to 10.1.1. It is, therefore, affected by multiple
vulnerabilities :

  - An unspecified flaw exists in the history menu
    functionality. An unauthenticated, remote attacker can
    exploit this to cause a denial of service condition.
    (CVE-2017-2495)

  - Multiple memory corruption issues exist in the WebKit
    component due to improper validation of user-supplied
    input. An unauthenticated, remote attacker can exploit
    these issues, by convincing a user to visit a specially
    crafted website, to execute arbitrary code.
    (CVE-2017-2496, CVE-2017-2505, CVE-2017-2506,
    CVE-2017-2514, CVE-2017-2515, CVE-2017-2521,
    CVE-2017-2525, CVE-2017-2526, CVE-2017-2530,
    CVE-2017-2531, CVE-2017-2538, CVE-2017-2539,
    CVE-2017-2544, CVE-2017-2547, CVE-2017-6980,
    CVE-2017-6984)

  - 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 address bar spoofing vulnerability exists due to
    improper state management. An unauthenticated, remote
    attacker can exploit this to spoof the address in the
    address bar. (CVE-2017-2500, CVE-2017-2511)

  - Multiple universal cross-site scripting (XSS)
    vulnerabilities exist in WebKit due to improper handling
    of WebKit Editor commands, container nodes, pageshow
    events, frame loading, and cached frames. 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,
    CVE-2017-2508, CVE-2017-2510, CVE-2017-2528,
    CVE-2017-2549)

  - 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)");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT207804");
  # https://lists.apple.com/archives/security-announce/2017/May/msg00003.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7a320df7");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apple Safari version 10.1.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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: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-2017-6984");

  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:"2017/05/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:safari");
  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("macosx_Safari31.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "MacOSX/Safari/Installed");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X or macOS");

if (!ereg(pattern:"Mac OS X 10\.(10|11|12)([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, "Mac OS X Yosemite 10.10 / Mac OS X El Capitan 10.11 / macOS Sierra 10.12");

installed = get_kb_item_or_exit("MacOSX/Safari/Installed", exit_code:0);
path      = get_kb_item_or_exit("MacOSX/Safari/Path", exit_code:1);
version   = get_kb_item_or_exit("MacOSX/Safari/Version", exit_code:1);

fixed_version = "10.1.1";

if (ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1)
{
  report = report_items_str(
    report_items:make_array(
      "Path", path,
      "Installed version", version,
      "Fixed version", fixed_version
    ),
    ordered_fields:make_list("Path", "Installed version", "Fixed version")
  );
  security_report_v4(port:0, severity:SECURITY_WARNING, extra:report, xss:true);
}
else audit(AUDIT_INST_PATH_NOT_VULN, "Safari", version, path);
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201706-15.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201706-15 (WebKitGTK+: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in WebKitGTK+. Please review the CVE identifiers referenced below for details. Impact : A remote attack can use multiple vectors to execute arbitrary code or cause a denial of service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id100675
    published2017-06-08
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100675
    titleGLSA-201706-15 : WebKitGTK+: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201706-15.
#
# The advisory text is Copyright (C) 2001-2017 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(100675);
  script_version("3.2");
  script_cvs_date("Date: 2019/04/10 16:10:17");

  script_cve_id("CVE-2015-2330", "CVE-2015-7096", "CVE-2015-7098", "CVE-2016-1723", "CVE-2016-1724", "CVE-2016-1725", "CVE-2016-1726", "CVE-2016-1727", "CVE-2016-1728", "CVE-2016-4692", "CVE-2016-4743", "CVE-2016-7586", "CVE-2016-7587", "CVE-2016-7589", "CVE-2016-7592", "CVE-2016-7598", "CVE-2016-7599", "CVE-2016-7610", "CVE-2016-7611", "CVE-2016-7623", "CVE-2016-7632", "CVE-2016-7635", "CVE-2016-7639", "CVE-2016-7640", "CVE-2016-7641", "CVE-2016-7642", "CVE-2016-7645", "CVE-2016-7646", "CVE-2016-7648", "CVE-2016-7649", "CVE-2016-7652", "CVE-2016-7654", "CVE-2016-7656", "CVE-2016-9642", "CVE-2016-9643", "CVE-2017-2350", "CVE-2017-2354", "CVE-2017-2355", "CVE-2017-2356", "CVE-2017-2362", "CVE-2017-2363", "CVE-2017-2364", "CVE-2017-2365", "CVE-2017-2366", "CVE-2017-2367", "CVE-2017-2369", "CVE-2017-2371", "CVE-2017-2373", "CVE-2017-2376", "CVE-2017-2377", "CVE-2017-2386", "CVE-2017-2392", "CVE-2017-2394", "CVE-2017-2395", "CVE-2017-2396", "CVE-2017-2405", "CVE-2017-2415", "CVE-2017-2419", "CVE-2017-2433", "CVE-2017-2442", "CVE-2017-2445", "CVE-2017-2446", "CVE-2017-2447", "CVE-2017-2454", "CVE-2017-2455", "CVE-2017-2457", "CVE-2017-2459", "CVE-2017-2460", "CVE-2017-2464", "CVE-2017-2465", "CVE-2017-2466", "CVE-2017-2468", "CVE-2017-2469", "CVE-2017-2470", "CVE-2017-2471", "CVE-2017-2475", "CVE-2017-2476", "CVE-2017-2481", "CVE-2017-2496", "CVE-2017-2504", "CVE-2017-2505", "CVE-2017-2506", "CVE-2017-2508", "CVE-2017-2510", "CVE-2017-2514", "CVE-2017-2515", "CVE-2017-2521", "CVE-2017-2525", "CVE-2017-2526", "CVE-2017-2528", "CVE-2017-2530", "CVE-2017-2531", "CVE-2017-2536", "CVE-2017-2539", "CVE-2017-2544", "CVE-2017-2547", "CVE-2017-2549", "CVE-2017-6980", "CVE-2017-6984");
  script_xref(name:"GLSA", value:"201706-15");

  script_name(english:"GLSA-201706-15 : WebKitGTK+: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201706-15
(WebKitGTK+: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in WebKitGTK+. Please
      review the CVE identifiers referenced below for details.
  
Impact :

    A remote attack can use multiple vectors to execute arbitrary code or
      cause a denial of service condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201706-15"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All WebKitGTK+ users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=net-libs/webkit-gtk-2.16.3:4'"
  );
  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:N/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:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:webkit-gtk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/08");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-libs/webkit-gtk", unaffected:make_list("ge 2.16.3"), vulnerable:make_list("lt 2.16.3"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "WebKitGTK+");
}

References