Vulnerabilities > CVE-2014-5191 - Cross-Site Scripting vulnerability in Ckeditor
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
Cross-site scripting (XSS) vulnerability in the Preview plugin before 4.4.3 in CKEditor allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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 CGI abuses NASL id WEBSPHERE_PORTAL_8_5_0_0_CF03.NASL description The version of IBM WebSphere Portal installed on the remote host is affected by the multiple vulnerabilities : - Multiple vulnerabilities exist in the Apache Cordova component, including cross-application scripting, security bypass, and information disclosure. (CVE-2014-3500, CVE-2014-3501, CVE-2014-3502) - An information disclosure flaw exists that allows remote authenticated attackers to obtain credentials by reading HTML source code. (CVE-2014-4761) - An unspecified vulnerability exists that allows an authenticated attacker to execute arbitrary code on the system. (CVE-2014-4808) - A flaw exists that is caused by improper recursion detection during entity expansion. By tricking a user into opening a specially-crafted XML document, an attacker can cause the system to crash, resulting in a denial of service. (CVE-2014-4814) - An information disclosure vulnerability exists that allows a remote attacker to identify whether or not a file exists based on the web server error codes. (CVE-2014-4821) - A flaw exists in CKEditor in the Preview plugin that allows a cross-site scripting attack. The flaw exists due to last seen 2020-06-01 modified 2020-06-02 plugin id 78742 published 2014-10-30 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/78742 title IBM WebSphere Portal 8.5.0 < 8.5.0 CF03 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(78742); script_version("1.10"); script_cvs_date("Date: 2018/08/06 14:03:14"); script_cve_id( "CVE-2014-3500", "CVE-2014-3501", "CVE-2014-3502", "CVE-2014-4761", "CVE-2014-4808", "CVE-2014-4814", "CVE-2014-4821", "CVE-2014-5191", "CVE-2014-6125", "CVE-2014-6126", "CVE-2014-6215" ); script_bugtraq_id( 69038, 69041, 69046, 69161, 70322, 70755, 70756, 70757, 70758, 70759, 71728 ); script_name(english:"IBM WebSphere Portal 8.5.0 < 8.5.0 CF03 Multiple Vulnerabilities"); script_summary(english:"Checks for the installed patch."); script_set_attribute(attribute:"synopsis", value: "The remote Windows host has web portal software installed that is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of IBM WebSphere Portal installed on the remote host is affected by the multiple vulnerabilities : - Multiple vulnerabilities exist in the Apache Cordova component, including cross-application scripting, security bypass, and information disclosure. (CVE-2014-3500, CVE-2014-3501, CVE-2014-3502) - An information disclosure flaw exists that allows remote authenticated attackers to obtain credentials by reading HTML source code. (CVE-2014-4761) - An unspecified vulnerability exists that allows an authenticated attacker to execute arbitrary code on the system. (CVE-2014-4808) - A flaw exists that is caused by improper recursion detection during entity expansion. By tricking a user into opening a specially-crafted XML document, an attacker can cause the system to crash, resulting in a denial of service. (CVE-2014-4814) - An information disclosure vulnerability exists that allows a remote attacker to identify whether or not a file exists based on the web server error codes. (CVE-2014-4821) - A flaw exists in CKEditor in the Preview plugin that allows a cross-site scripting attack. The flaw exists due to 'plugins/preview/preview.html' not properly validating user-supplied input before returning it to users. This allows an attacker to send a specially crafted request designed to steal cookie-based authentication credentials. (CVE-2014-5191) - A cross-site request forgery vulnerability exists due to improper validation of user-supplied input. By tricking a user into visiting a malicious website, a remote attacker can perform cross-site scripting attacks, web cache poisoning, and other malicious activities. (CVE-2014-6125) - A cross-site scripting vulnerability exists due to improper validation of user-supplied input. A remote attacker can execute code within a victim's web browser within the context of the hosted site. This can lead to the compromise of the user's cookie-based authentication credentials. (CVE-2014-6126) - An unspecified cross-site scripting vulnerability exists due to improper validation of user input. (CVE-2014-4762)"); script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21684649"); script_set_attribute(attribute:"see_also", value:"https://www-304.ibm.com/support/docview.wss?uid=swg21684651"); # https://www-304.ibm.com/connections/blogs/PSIRT/entry/ibm_security_bulletin_fixes_available_for_security_vulnerabilities_in_ibm_websphere_portal_cve_2014_4814_cve_2014_4808_cve_2014_4821_cve_2014_6125_cve_2014_6126?lang=en_us script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2e77e115"); # https://www-304.ibm.com/connections/blogs/PSIRT/entry/ibm_security_bulletin_fixes_available_for_security_vulnerabilities_in_ckeditor_that_affect_ibm_websphere_portal_cve_2014_5191?lang=en_us script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?60595c5b"); script_set_attribute(attribute:"see_also", value:"https://www-304.ibm.com/support/docview.wss?uid=swg21684650"); script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21684652"); # https://www-304.ibm.com/connections/blogs/PSIRT/entry/ibm_security_bulletin_fixes_available_for_security_vulnerabilities_in_ibm_websphere_portal_cve_2014_3083_cve_2014_4761?lang=en_us script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?aa26251e"); script_set_attribute(attribute:"solution", value: "IBM has published a cumulative fix (CF03) for WebSphere Portal 8.5.0. Refer to IBM's advisory for more information."); 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:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990); script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/24"); script_set_attribute(attribute:"patch_publication_date", value:"2014/10/27"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/30"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:websphere_portal"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"CGI abuses"); script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc."); script_dependencies("websphere_portal_installed.nbin"); script_require_keys("installed_sw/IBM WebSphere Portal"); exit(0); } include("websphere_portal_version.inc"); websphere_portal_check_version( ranges:make_list("8.5.0.0, 8.5.0.0"), fix:"CF03", severity:SECURITY_WARNING, xss:TRUE, xsrf:TRUE );NASL family CGI abuses : XSS NASL id CKEDITOR_PREVIEW_PLUGIN_XSS.NASL description The version of CKEditor installed on the remote host is affected by a cross-site scripting vulnerability. The included last seen 2020-06-01 modified 2020-06-02 plugin id 76943 published 2014-07-31 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/76943 title CKEditor Preview Plugin Unspecified XSS NASL family CGI abuses NASL id WEBSPHERE_PORTAL_8_0_0_1_CF15.NASL description The version of IBM WebSphere Portal installed on the remote host is 8.0.0.x prior to 8.0.0.1 CF15. It is, therefore, affected by multiple vulnerabilities : - A flaw exists in last seen 2020-06-01 modified 2020-06-02 plugin id 82850 published 2015-04-17 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82850 title IBM WebSphere Portal 8.0.0.x < 8.0.0.1 CF15 Multiple Vulnerabilities NASL family CGI abuses NASL id WEBSPHERE_PORTAL_CVE-2014-5191.NASL description The version of IBM WebSphere Portal installed on the remote host is affected by a cross-site scripting vulnerability in the CKEditor component due to improper validation of user-supplied input. A remote attacker can exploit this flaw using a specially crafted URL to execute scripts in a user last seen 2020-06-01 modified 2020-06-02 plugin id 78746 published 2014-10-30 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/78746 title IBM WebSphere Portal CKEditor XSS (PI24992, PI26456)