Vulnerabilities > CVE-2013-1951 - Cross-site Scripting vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
LOW Availability impact
NONE Summary
A cross-site scripting (XSS) vulnerability in MediaWiki before 1.19.5 and 1.20.x before 1.20.4 and allows remote attackers to inject arbitrary web script or HTML via Lua function names.
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 Gentoo Local Security Checks NASL id GENTOO_GLSA-201310-21.NASL description The remote host is affected by the vulnerability described in GLSA-201310-21 (MediaWiki: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in MediaWiki. Please review the CVE identifiers referenced below for details. Impact : A remote attacker may be able to execute arbitrary code, perform man-in-the-middle attacks, obtain sensitive information or perform cross-site scripting attacks. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 70677 published 2013-10-29 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/70677 title GLSA-201310-21 : MediaWiki: 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 201310-21. # # The advisory text is Copyright (C) 2001-2019 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(70677); script_version("1.11"); script_cvs_date("Date: 2019/11/22"); script_cve_id("CVE-2013-1816", "CVE-2013-1817", "CVE-2013-1818", "CVE-2013-1951", "CVE-2013-2031", "CVE-2013-2032", "CVE-2013-2114", "CVE-2013-4301", "CVE-2013-4302", "CVE-2013-4303", "CVE-2013-4304", "CVE-2013-4305", "CVE-2013-4306", "CVE-2013-4307", "CVE-2013-4308"); script_bugtraq_id(58304, 58305, 58306, 59077, 59594, 59595, 60077, 62194, 62201, 62202, 62203, 62210, 62215, 62218, 62434); script_xref(name:"GLSA", value:"201310-21"); script_name(english:"GLSA-201310-21 : MediaWiki: 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-201310-21 (MediaWiki: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in MediaWiki. Please review the CVE identifiers referenced below for details. Impact : A remote attacker may be able to execute arbitrary code, perform man-in-the-middle attacks, obtain sensitive information or perform cross-site scripting attacks. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201310-21" ); script_set_attribute( attribute:"solution", value: "All MediaWiki 1.21.x users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.21.2' All MediaWiki 1.20.x users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.20.7' All MediaWiki 1.19.x users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.19.8'" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); 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:N/S:U/C:N/I:N/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mediawiki"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/12"); script_set_attribute(attribute:"patch_publication_date", value:"2013/10/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/29"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2013-2019 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:"www-apps/mediawiki", unaffected:make_list("ge 1.21.2", "rge 1.20.7", "rge 1.19.8"), vulnerable:make_list("lt 1.21.2"))) 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, "MediaWiki"); }NASL family Fedora Local Security Checks NASL id FEDORA_2013-6170.NASL description *An internal review discovered that specially crafted Lua function names could lead to XSS. https://bugzilla.wikimedia.org/show_bug.cgi?id=46084 *Daniel Franke reported that during SVG parsing, MediaWiki failed to prevent XML external entity (XXE) processing. This could lead to local file disclosure, or potentially remote command execution in environments that have enabled expect:// handling. https://bugzilla.wikimedia.org/show_bug.cgi?id=46859 *Internal review also discovered that Special:Import, and Extension:RSS failed to prevent XML external entity (XXE) processing. https://bugzilla.wikimedia.org/show_bug.cgi?id=47251 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2013-04-30 plugin id 66259 published 2013-04-30 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/66259 title Fedora 17 : mediawiki-1.19.5-1.fc17 (2013-6170) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2013-6170. # include("compat.inc"); if (description) { script_id(66259); script_version("1.11"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2013-1951"); script_bugtraq_id(59077); script_xref(name:"FEDORA", value:"2013-6170"); script_name(english:"Fedora 17 : mediawiki-1.19.5-1.fc17 (2013-6170)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "*An internal review discovered that specially crafted Lua function names could lead to XSS. https://bugzilla.wikimedia.org/show_bug.cgi?id=46084 *Daniel Franke reported that during SVG parsing, MediaWiki failed to prevent XML external entity (XXE) processing. This could lead to local file disclosure, or potentially remote command execution in environments that have enabled expect:// handling. https://bugzilla.wikimedia.org/show_bug.cgi?id=46859 *Internal review also discovered that Special:Import, and Extension:RSS failed to prevent XML external entity (XXE) processing. https://bugzilla.wikimedia.org/show_bug.cgi?id=47251 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=953666" ); # https://bugzilla.wikimedia.org/show_bug.cgi?id=46084 script_set_attribute( attribute:"see_also", value:"https://phabricator.wikimedia.org/T48084" ); # https://bugzilla.wikimedia.org/show_bug.cgi?id=46859 script_set_attribute( attribute:"see_also", value:"https://phabricator.wikimedia.org/T48859" ); # https://bugzilla.wikimedia.org/show_bug.cgi?id=47251 script_set_attribute( attribute:"see_also", value:"https://phabricator.wikimedia.org/T49251" ); # https://lists.fedoraproject.org/pipermail/package-announce/2013-April/104027.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?11b3598c" ); script_set_attribute( attribute:"solution", value:"Update the affected mediawiki package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:mediawiki"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:17"); script_set_attribute(attribute:"patch_publication_date", value:"2013/04/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/30"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^17([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 17.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC17", reference:"mediawiki-1.19.5-1.fc17")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "mediawiki"); }NASL family CGI abuses NASL id MEDIAWIKI_1_19_5.NASL description According to its version number, the instance of MediaWiki running on the remote host is affected by multiple security vulnerabilities : - A flaw exists because the application fails to validate input passed via Lua function names before returning it to the user. This allows a remote attacker to conduct cross-site scripting (XSS) attacks. - Multiple XML external entity (XXE) flaws exist in last seen 2020-06-01 modified 2020-06-02 plugin id 66201 published 2013-04-24 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/66201 title MediaWiki 1.19.x < 1.19.5 / 1.20.x < 1.20.4 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(66201); script_version("1.12"); script_cvs_date("Date: 2019/12/04"); script_cve_id("CVE-2013-1951"); script_bugtraq_id(59077); script_name(english:"MediaWiki 1.19.x < 1.19.5 / 1.20.x < 1.20.4 Multiple Vulnerabilities"); script_summary(english:"Checks version of MediaWiki."); script_set_attribute(attribute:"synopsis", value: "The remote web server contains a PHP application that is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "According to its version number, the instance of MediaWiki running on the remote host is affected by multiple security vulnerabilities : - A flaw exists because the application fails to validate input passed via Lua function names before returning it to the user. This allows a remote attacker to conduct cross-site scripting (XSS) attacks. - Multiple XML external entity (XXE) flaws exist in 'Special:Import', 'SVG' parsing, and 'Extension:RSS' from untrusted sources. This allows a remote attacker to execute arbitrary commands and gain access to arbitrary files. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number."); # https://lists.wikimedia.org/pipermail/mediawiki-announce/2013-April/000127.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4f84eeb1"); script_set_attribute(attribute:"see_also", value:"https://www.mediawiki.org/wiki/Release_notes/1.19#MediaWiki_1.19.5"); script_set_attribute(attribute:"see_also", value:"https://www.mediawiki.org/wiki/Release_notes/1.20#MediaWiki_1.20.4"); script_set_attribute(attribute:"solution", value: "Upgrade to MediaWiki version 1.19.5 / 1.20.4 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N"); 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:C/C:L/I:L/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2013-1951"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); 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:"2013/04/15"); script_set_attribute(attribute:"patch_publication_date", value:"2013/04/15"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/24"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:mediawiki:mediawiki"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"CGI abuses"); script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("mediawiki_detect.nasl"); script_require_keys("Settings/ParanoidReport", "installed_sw/MediaWiki", "www/PHP"); script_require_ports("Services/www", 80); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("http.inc"); include("install_func.inc"); app = "MediaWiki"; get_install_count(app_name:app, exit_if_zero:TRUE); port = get_http_port(default:80, php:TRUE); install = get_single_install( app_name : app, port : port, exit_if_unknown_ver : TRUE ); version = install['version']; install_url = build_url(qs:install['path'], port:port); if (report_paranoia < 2) audit(AUDIT_PARANOID); if ( version =~ "^1\.19\.[0-4]([^0-9]|$)" || version =~ "^1\.20\.[0-3]([^0-9]|$)" ) { set_kb_item(name: 'www/'+port+'/XSS', value: TRUE); if (report_verbosity > 0) { report = '\n URL : ' + install_url + '\n Installed version : ' + version + '\n Fixed versions : 1.19.5 / 1.20.4' + '\n'; security_warning(port:port, extra:report); } else security_warning(port); } else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);NASL family Fedora Local Security Checks NASL id FEDORA_2013-6171.NASL description *An internal review discovered that specially crafted Lua function names could lead to XSS. https://bugzilla.wikimedia.org/show_bug.cgi?id=46084 *Daniel Franke reported that during SVG parsing, MediaWiki failed to prevent XML external entity (XXE) processing. This could lead to local file disclosure, or potentially remote command execution in environments that have enabled expect:// handling. https://bugzilla.wikimedia.org/show_bug.cgi?id=46859 *Internal review also discovered that Special:Import, and Extension:RSS failed to prevent XML external entity (XXE) processing. https://bugzilla.wikimedia.org/show_bug.cgi?id=47251 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2013-04-30 plugin id 66260 published 2013-04-30 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/66260 title Fedora 18 : mediawiki-1.19.5-1.fc18 (2013-6171)
References
- https://security-tracker.debian.org/tracker/CVE-2013-1951
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-1951
- https://bugs.gentoo.org/show_bug.cgi?id=CVE-2013-1951
- https://phabricator.wikimedia.org/T48084
- http://security.gentoo.org/glsa/glsa-201310-21.xml
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/104022.html
- http://www.openwall.com/lists/oss-security/2013/04/16/12
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/104027.html
- http://www.securityfocus.com/bid/59077