Vulnerabilities > CVE-2018-4133 - Cross-site Scripting vulnerability in multiple products
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
An issue was discovered in certain Apple products. Safari before 11.1 is affected. The issue involves the "WebKit" component. A Safari cross-site scripting (XSS) vulnerability allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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.
- Embedding Scripts in Non-Script Elements This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an attacker to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote attacker to collect and interpret the output of said attack.
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Cross-Site Scripting in Error Pages An attacker distributes a link (or possibly some other query structure) with a request to a third party web server that is malformed and also contains a block of exploit code in order to have the exploit become live code in the resulting error page. When the third party web server receives the crafted request and notes the error it then creates an error message that echoes the malformed message, including the exploit. Doing this converts the exploit portion of the message into to valid language elements that are executed by the viewing browser. When a victim executes the query provided by the attacker the infected error message error message is returned including the exploit code which then runs in the victim's browser. XSS can result in execution of code as well as data leakage (e.g. session cookies can be sent to the attacker). This type of attack is especially dangerous since the exploit appears to come from the third party web server, who the victim may trust and hence be more vulnerable to deception.
- Cross-Site Scripting Using Alternate Syntax The attacker uses alternate forms of keywords or commands that result in the same action as the primary form but which may not be caught by filters. For example, many keywords are processed in a case insensitive manner. If the site's web filtering algorithm does not convert all tags into a consistent case before the comparison with forbidden keywords it is possible to bypass filters (e.g., incomplete black lists) by using an alternate case structure. For example, the "script" tag using the alternate forms of "Script" or "ScRiPt" may bypass filters where "script" is the only form tested. Other variants using different syntax representations are also possible as well as using pollution meta-characters or entities that are eventually ignored by the rendering engine. The attack can result in the execution of otherwise prohibited functionality.
Nessus
NASL family MacOS X Local Security Checks NASL id MACOSX_SAFARI11_1_0.NASL description The version of Apple Safari installed on the remote macOS or Mac OS X host is prior to 11.1. It is, therefore, affected by multiple vulnerabilities as described in the HT208695 security advisory. last seen 2020-06-01 modified 2020-06-02 plugin id 108805 published 2018-04-03 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108805 title macOS : Apple Safari < 11.1 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(108805); script_version("1.5"); script_cvs_date("Date: 2019/07/03 12:01:40"); script_cve_id( "CVE-2018-4101", "CVE-2018-4102", "CVE-2018-4113", "CVE-2018-4114", "CVE-2018-4116", "CVE-2018-4117", "CVE-2018-4118", "CVE-2018-4119", "CVE-2018-4120", "CVE-2018-4121", "CVE-2018-4122", "CVE-2018-4125", "CVE-2018-4127", "CVE-2018-4128", "CVE-2018-4129", "CVE-2018-4130", "CVE-2018-4133", "CVE-2018-4137", "CVE-2018-4145", "CVE-2018-4146", "CVE-2018-4161", "CVE-2018-4162", "CVE-2018-4163", "CVE-2018-4165", "CVE-2018-4186", "CVE-2018-4207", "CVE-2018-4208", "CVE-2018-4209", "CVE-2018-4210", "CVE-2018-4212", "CVE-2018-4213" ); script_bugtraq_id(103580, 104887); script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-3-29-6"); script_name(english:"macOS : Apple Safari < 11.1 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 11.1. It is, therefore, affected by multiple vulnerabilities as described in the HT208695 security advisory."); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208695"); # https://lists.apple.com/archives/security-announce/2018/Mar/msg00005.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0a2c7175"); script_set_attribute(attribute:"solution", value: "Upgrade to Apple Safari version 11.1 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-2018-4101"); 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:"2018/03/29"); script_set_attribute(attribute:"patch_publication_date", value:"2018/03/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/03"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:safari"); script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x"); 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("macosx_apple_safari_installed.nbin"); 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 (!preg(pattern:"Mac OS X 10\.(11|12|13)([^0-9]|$)", string:os)) audit(AUDIT_OS_NOT, 'Mac OS X El Capitan 10.11 / macOS Sierra 10.12 / macOS High Sierra 10.13'); 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 = '11.1'; 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); } else audit(AUDIT_INST_PATH_NOT_VULN, 'Safari', version, path);NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201808-04.NASL description The remote host is affected by the vulnerability described in GLSA-201808-04 (WebkitGTK+: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in WebKitGTK+. Please review the referenced CVE identifiers for details. Impact : A remote attacker could execute arbitrary commands or cause a denial of service condition via a maliciously crafted web content. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 112078 published 2018-08-23 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/112078 title GLSA-201808-04 : WebkitGTK+: Multiple vulnerabilities NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3635-1.NASL description A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 109468 published 2018-05-01 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109468 title Ubuntu 16.04 LTS / 17.10 : webkit2gtk vulnerabilities (USN-3635-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-3387-1.NASL description This update for webkit2gtk3 to version 2.20.3 fixes the issues : The following security vulnerabilities were addressed : CVE-2018-12911: Fixed an off-by-one error in xdg_mime_get_simple_globs (boo#1101999) CVE-2017-13884: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2017-13885: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2017-7153: An unspecified issue allowed remote attackers to spoof user-interface information (about whether the entire content is derived from a valid TLS session) via a crafted website that sends a 401 Unauthorized redirect (bsc#1077535). CVE-2017-7160: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2017-7161: An unspecified issue allowed remote attackers to execute arbitrary code via special characters that trigger command injection (bsc#1075775, bsc#1077535). CVE-2017-7165: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2018-4088: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2018-4096: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). CVE-2018-4200: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website that triggers a WebCore::jsElementScrollHeightGetter use-after-free (bsc#1092280). CVE-2018-4204: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1092279). CVE-2018-4101: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1088182). CVE-2018-4113: An issue in the JavaScriptCore function in the last seen 2020-06-01 modified 2020-06-02 plugin id 118389 published 2018-10-25 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118389 title SUSE SLED12 / SLES12 Security Update : webkit2gtk3 (SUSE-SU-2018:3387-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-1288.NASL description This update for webkit2gtk3 to version 2.20.3 fixes the issues : The following security vulnerabilities were addressed : - CVE-2018-12911: Fixed an off-by-one error in xdg_mime_get_simple_globs (boo#1101999) - CVE-2017-13884: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2017-13885: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2017-7153: An unspecified issue allowed remote attackers to spoof user-interface information (about whether the entire content is derived from a valid TLS session) via a crafted website that sends a 401 Unauthorized redirect (bsc#1077535). - CVE-2017-7160: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2017-7161: An unspecified issue allowed remote attackers to execute arbitrary code via special characters that trigger command injection (bsc#1075775, bsc#1077535). - CVE-2017-7165: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2018-4088: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2018-4096: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1075775). - CVE-2018-4200: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website that triggers a WebCore::jsElementScrollHeightGetter use-after-free (bsc#1092280). - CVE-2018-4204: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1092279). - CVE-2018-4101: An unspecified issue allowed remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted website (bsc#1088182). - CVE-2018-4113: An issue in the JavaScriptCore function in the last seen 2020-06-05 modified 2018-10-26 plugin id 118453 published 2018-10-26 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118453 title openSUSE Security Update : webkit2gtk3 (openSUSE-2018-1288)