Vulnerabilities > CVE-2016-1727 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
WebKit, as used in Apple iOS before 9.2.1, Safari before 9.0.3, and tvOS before 9.1.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, a different vulnerability than CVE-2016-1724.
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 MACOSX_SAFARI9_0_3.NASL description The version of Apple Safari installed on the remote Mac OS X host is prior to 9.0.3. It is, therefore, affected by the following vulnerabilities : - Multiple memory corruption vulnerabilities exist in WebKit due to improper validation of user-supplied input. A remote attacker, via a specially crafted website, can exploit these issues to execute arbitrary code or cause a denial of service. (CVE-2016-1723, CVE-2016-1724, CVE-2016-1725, CVE-2016-1726, CVE-2016-1727) - A flaw exists in the Cascading Style Sheets (CSS) implementation in WebKit CSS when handling the last seen 2020-06-01 modified 2020-06-02 plugin id 88597 published 2016-02-05 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88597 title Mac OS X : Apple Safari < 9.0.3 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(88597); script_version("1.5"); script_cvs_date("Date: 2019/11/20"); script_cve_id( "CVE-2016-1723", "CVE-2016-1724", "CVE-2016-1725", "CVE-2016-1726", "CVE-2016-1727", "CVE-2016-1728" ); script_bugtraq_id(81263); script_xref(name:"APPLE-SA", value:"APPLE-SA-2016-01-19-3"); script_name(english:"Mac OS X : Apple Safari < 9.0.3 Multiple Vulnerabilities"); script_summary(english:"Checks the Safari version."); script_set_attribute(attribute:"synopsis", value: "The remote host has a web browser installed that is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Apple Safari installed on the remote Mac OS X host is prior to 9.0.3. It is, therefore, affected by the following vulnerabilities : - Multiple memory corruption vulnerabilities exist in WebKit due to improper validation of user-supplied input. A remote attacker, via a specially crafted website, can exploit these issues to execute arbitrary code or cause a denial of service. (CVE-2016-1723, CVE-2016-1724, CVE-2016-1725, CVE-2016-1726, CVE-2016-1727) - A flaw exists in the Cascading Style Sheets (CSS) implementation in WebKit CSS when handling the 'a:visited button' CSS selector while evaluating the height of the containing element. A remote attacker can exploit this, via a crafted website, to obtain sensitive browser history information. (CVE-2016-1728)"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT205730"); # http://lists.apple.com/archives/security-announce/2016/Jan/msg00004.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c7e0375f"); script_set_attribute(attribute:"solution", value: "Upgrade to Apple Safari version 9.0.3 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:U/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:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-1727"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/01/19"); script_set_attribute(attribute:"patch_publication_date", value:"2016/01/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/05"); 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) 2016-2019 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"); if (!ereg(pattern:"Mac OS X 10\.(9|10|11)([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, "Mac OS X 10.9 / 10.10 / 10.11"); 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 = "9.0.3"; if (ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1) { if (report_verbosity > 0) { report = '\n Path : ' + path + '\n Installed version : ' + version + '\n Fixed version : ' + fixed_version + '\n'; security_hole(port:0, extra:report); } else security_hole(0); } else audit(AUDIT_INST_PATH_NOT_VULN, "Safari", version, path);NASL family Misc. NASL id APPLETV_9_1_1.NASL description According to its banner, the remote Apple TV device is a version prior to 9.1.1. It is, therefore, affected by the following vulnerabilities : - A type confusion error exists in the bundled libxslt library due to improper handling of invalid values. An attacker can exploit this to crash the application, resulting in a denial of service condition. (CVE-2015-7995) - A memory corruption issue exists due to improper validation of user-supplied input when handling disk images. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1717) - A use-after-free error exists in the IOHIDFamily API due to improper validation of user-supplied input. A local attacker can exploit this to dereference already freed memory, resulting in a denial of service condition or the execution of arbitrary code. (CVE-2016-1719) - A memory corruption issue exists in IOKit due to improper validation of user-supplied input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1720) - A memory corruption issue exists in the Kernel due to improper validation of user-supplied input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1721) - An overflow condition exists in the add_lockdown_session() function due to improper validation of user-supplied input. A local attacker can exploit this to cause a heap-based buffer overflow, resulting in a denial of service condition or the execution of arbitrary code. (CVE-2016-1722) - Multiple memory corruption issues exist in WebKit due to improper validation of user-supplied input. A remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1724, CVE-2016-1727) last seen 2020-06-01 modified 2020-06-02 plugin id 88418 published 2016-01-27 reporter This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88418 title Apple TV < 9.1.1 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(88418); script_version("1.13"); script_cvs_date("Date: 2018/12/14 14:58:47"); script_cve_id( "CVE-2015-7995", "CVE-2016-1717", "CVE-2016-1719", "CVE-2016-1720", "CVE-2016-1721", "CVE-2016-1722", "CVE-2016-1724", "CVE-2016-1727" ); script_bugtraq_id(77325); script_xref(name:"APPLE-SA", value:"APPLE-SA-2016-01-25-1"); script_name(english:"Apple TV < 9.1.1 Multiple Vulnerabilities"); script_summary(english:"Checks the version in the banner."); script_set_attribute(attribute:"synopsis", value: "The remote device is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "According to its banner, the remote Apple TV device is a version prior to 9.1.1. It is, therefore, affected by the following vulnerabilities : - A type confusion error exists in the bundled libxslt library due to improper handling of invalid values. An attacker can exploit this to crash the application, resulting in a denial of service condition. (CVE-2015-7995) - A memory corruption issue exists due to improper validation of user-supplied input when handling disk images. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1717) - A use-after-free error exists in the IOHIDFamily API due to improper validation of user-supplied input. A local attacker can exploit this to dereference already freed memory, resulting in a denial of service condition or the execution of arbitrary code. (CVE-2016-1719) - A memory corruption issue exists in IOKit due to improper validation of user-supplied input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1720) - A memory corruption issue exists in the Kernel due to improper validation of user-supplied input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1721) - An overflow condition exists in the add_lockdown_session() function due to improper validation of user-supplied input. A local attacker can exploit this to cause a heap-based buffer overflow, resulting in a denial of service condition or the execution of arbitrary code. (CVE-2016-1722) - Multiple memory corruption issues exist in WebKit due to improper validation of user-supplied input. A remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1724, CVE-2016-1727)"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT205729"); # https://lists.apple.com/archives/security-announce/2016/Jan/msg00005.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cbf27a14"); script_set_attribute(attribute:"solution", value: "Upgrade to Apple TV version 9.1.1 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: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-2016-1727"); 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:"2016/01/14"); script_set_attribute(attribute:"patch_publication_date", value:"2016/01/14"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/27"); 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) 2016-2018 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 = "13U717"; tvos_ver = '9.1.1'; # 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 );NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201706-15.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 100675 published 2017-06-08 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/100675 title GLSA-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
- http://lists.apple.com/archives/security-announce/2016/Jan/msg00005.html
- https://support.apple.com/HT205729
- https://support.apple.com/HT205732
- https://support.apple.com/HT205730
- http://lists.apple.com/archives/security-announce/2016/Jan/msg00002.html
- http://lists.apple.com/archives/security-announce/2016/Jan/msg00004.html
- https://support.apple.com/HT206168
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
- http://packetstormsecurity.com/files/136227/WebKitGTK-Memory-Corruption-Denial-Of-Service.html
- http://www.securitytracker.com/id/1034737
- http://www.securityfocus.com/bid/81263
- https://security.gentoo.org/glsa/201706-15
- http://www.securityfocus.com/archive/1/537771/100/0/threaded