Vulnerabilities > CVE-2015-2931 - Cross-site Scripting vulnerability in Mediawiki

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
mediawiki
CWE-79
nessus

Summary

Incomplete blacklist vulnerability in includes/upload/UploadBase.php in MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2 allows remote attackers to inject arbitrary web script or HTML via an application/xml MIME type for a nested SVG with a data: URI.

Vulnerable Configurations

Part Description Count
Application
Mediawiki
266

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 familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2015-200.NASL
    descriptionUpdated mediawiki packages fix security vulnerabilities : In MediaWiki before 1.23.9, one could circumvent the SVG MIME blacklist for embedded resources. This allowed an attacker to embed JavaScript in the SVG (CVE-2015-2931). In MediaWiki before 1.23.9, the SVG filter to prevent injecting JavaScript using animate elements was incorrect (CVE-2015-2932). In MediaWiki before 1.23.9, a stored XSS vulnerability exists due to the way attributes were expanded in MediaWiki
    last seen2020-06-01
    modified2020-06-02
    plugin id82686
    published2015-04-10
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82686
    titleMandriva Linux Security Advisory : mediawiki (MDVSA-2015:200)
    code
    #%NASL_MIN_LEVEL 80502
    
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Mandriva Linux Security Advisory MDVSA-2015:200. 
    # The text itself is copyright (C) Mandriva S.A.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(82686);
      script_version("1.6");
      script_cvs_date("Date: 2019/08/02 13:32:57");
    
      script_cve_id("CVE-2015-2931", "CVE-2015-2932", "CVE-2015-2933", "CVE-2015-2934", "CVE-2015-2935", "CVE-2015-2936", "CVE-2015-2937", "CVE-2015-2938", "CVE-2015-2939", "CVE-2015-2940");
      script_bugtraq_id(73477);
      script_xref(name:"MDVSA", value:"2015:200");
    
      script_name(english:"Mandriva Linux Security Advisory : mediawiki (MDVSA-2015:200)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Mandriva Linux host is missing one or more security
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Updated mediawiki packages fix security vulnerabilities :
    
    In MediaWiki before 1.23.9, one could circumvent the SVG MIME
    blacklist for embedded resources. This allowed an attacker to embed
    JavaScript in the SVG (CVE-2015-2931).
    
    In MediaWiki before 1.23.9, the SVG filter to prevent injecting
    JavaScript using animate elements was incorrect (CVE-2015-2932).
    
    In MediaWiki before 1.23.9, a stored XSS vulnerability exists due to
    the way attributes were expanded in MediaWiki's Html class, in
    combination with LanguageConverter substitutions (CVE-2015-2933).
    
    In MediaWiki before 1.23.9, MediaWiki's SVG filtering could be
    bypassed with entity encoding under the Zend interpreter. This could
    be used to inject JavaScript (CVE-2015-2934).
    
    In MediaWiki before 1.23.9, one could bypass the style filtering for
    SVG files to load external resources. This could violate the anonymity
    of users viewing the SVG (CVE-2015-2935).
    
    In MediaWiki before 1.23.9, MediaWiki versions using PBKDF2 for
    password hashing (not the default for 1.23) are vulnerable to DoS
    attacks using extremely long passwords (CVE-2015-2936).
    
    In MediaWiki before 1.23.9, MediaWiki is vulnerable to Quadratic
    Blowup DoS attacks, under both HHVM and Zend PHP (CVE-2015-2937).
    
    In MediaWiki before 1.23.9, the MediaWiki feature allowing a user to
    preview another user's custom JavaScript could be abused for privilege
    escalation (CVE-2015-2938).
    
    In MediaWiki before 1.23.9, function names were not sanitized in Lua
    error backtraces, which could lead to XSS (CVE-2015-2939).
    
    In MediaWiki before 1.23.9, the CheckUser extension did not prevent
    CSRF attacks on the form allowing checkusers to look up sensitive
    information about other users. Since the use of CheckUser is logged,
    the CSRF could be abused to defame a trusted user or flood the logs
    with noise (CVE-2015-2940).
    
    The mediawiki package has been updated to version 1.23.9, fixing these
    issues and other bugs."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://advisories.mageia.org/MGASA-2015-0142.html"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
      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:mandriva:linux:mediawiki");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:mediawiki-mysql");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:mediawiki-pgsql");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:mediawiki-sqlite");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2015/04/10");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/10");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Mandriva Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/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);
    if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
    if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"MDK-MBS1", reference:"mediawiki-1.23.9-1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", reference:"mediawiki-mysql-1.23.9-1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", reference:"mediawiki-pgsql-1.23.9-1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", reference:"mediawiki-sqlite-1.23.9-1.mbs1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyCGI abuses
    NASL idMEDIAWIKI_1_24_2.NASL
    descriptionAccording to its version number, the MediaWiki application running on the remote host is affected by the following vulnerabilities : - An input validation error exists related to handling API errors that allows reflected cross-site scripting attacks. (CVE-2014-9714, CVE-2015-2941) - An input validation error exists related to SVG file uploads that allows stored cross-site scripting attacks by bypassing a missing MIME type blacklist. (CVE-2015-2931) - An input validation error exists related to the handling of JavaScript used to animate elements in the
    last seen2020-06-01
    modified2020-06-02
    plugin id84164
    published2015-06-12
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/84164
    titleMediaWiki < 1.19.24 / 1.23.9 / 1.24.2 Multiple Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(84164);
      script_version("1.9");
      script_cvs_date("Date: 2019/11/22");
    
      script_cve_id(
        "CVE-2014-9714",
        "CVE-2015-2931",
        "CVE-2015-2932",
        "CVE-2015-2933",
        "CVE-2015-2934",
        "CVE-2015-2935",
        "CVE-2015-2936",
        "CVE-2015-2937",
        "CVE-2015-2938",
        "CVE-2015-2939",
        "CVE-2015-2940",
        "CVE-2015-2941",
        "CVE-2015-2942"
      );
      script_bugtraq_id(73477, 74061);
    
      script_name(english:"MediaWiki < 1.19.24 / 1.23.9 / 1.24.2 Multiple Vulnerabilities");
      script_summary(english:"Checks the MediaWiki version.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote web server contains an application that is affected by
    multiple vulnerabilities.");
      script_set_attribute(attribute:"description", value:
    "According to its version number, the MediaWiki application running on
    the remote host is affected by the following vulnerabilities :
    
      - An input validation error exists related to handling
        API errors that allows reflected cross-site scripting
        attacks. (CVE-2014-9714, CVE-2015-2941)
    
      - An input validation error exists related to SVG file
        uploads that allows stored cross-site scripting attacks
        by bypassing a missing MIME type blacklist.
        (CVE-2015-2931)
    
      - An input validation error exists related to the handling
        of JavaScript used to animate elements in the
        'includes/upload/UploadBase.php' script that allows a
        remote attacker to bypass the blacklist filter.
        (CVE-2015-2932)
    
      - An input validation error exists in the
        'includes/Html.php' script that allows stored cross-site
        scripting attacks. (CVE-2015-2933)
    
      - A flaw in the 'includes/libs/XmlTypeCheck.php' script
        allows a remote attacker to bypass the SVG filter by
        encoding SVG entities. (CVE-2015-2934)
    
      - A flaw in the 'includes/upload/UploadBase.php' script
        allows a remote attacker to bypass the SVG filter and
        de-anonymize the wiki readers. This issue exists due to
        an incomplete fix for CVE-2014-7199. (CVE-2015-2935)
    
      - A denial of service vulnerability exists due to a flaw
        in the handling of hashing large PBKDF2 passwords.
        (CVE-2015-2936)
    
      - A denial of service vulnerability exists due to an XML
        external entity injection (XXE) flaw that is triggered
        by the parsing of crafted XML data. (CVE-2015-2937)
    
      - An input validation error exists related to the
        user-supplied custom JavaScript that allows stored
        cross-site scripting attacks. (CVE-2015-2938)
    
      - An input validation error exists related to the
        Scribunto extension that allows stored cross-site
        scripting attacks. (CVE-2015-2939)
    
      - A flaw in the CheckUser extension allows cross-site
        request forgery attacks due to a flaw in which user
        rights are not properly checked. (CVE-2015-2940)
    
      - A denial of service vulnerability exists due to an
        XML external entity (XXE) injection flaw triggered by
        the parsing of crafted XML data in SVG or XMP files.
        (CVE-2015-2942)
    
      - A cross-site scripting vulnerability exists due to
        improper validation of input encoded entities in SVG
        files. An unauthenticated, remote attacker can exploit
        this, via a specially crafted request, to execute
        arbitrary script code in a user's browser session.
    
    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/2015-March/000175.html
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bfc5045c");
      script_set_attribute(attribute:"see_also", value:"https://www.mediawiki.org/wiki/Release_notes/1.19#MediaWiki_1.19.24");
      script_set_attribute(attribute:"see_also", value:"https://www.mediawiki.org/wiki/Release_notes/1.23#MediaWiki_1.23.9");
      script_set_attribute(attribute:"see_also", value:"https://www.mediawiki.org/wiki/Release_notes/1.24#MediaWiki_1.24.2");
      script_set_attribute(attribute:"see_also", value:"https://blogs.securiteam.com/index.php/archives/2669");
      script_set_attribute(attribute:"solution", value:
    "Upgrade to MediaWiki version 1.19.24 / 1.23.9 / 1.24.2 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:U/RL:OF/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-2940");
    
      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:"2015/03/31");
      script_set_attribute(attribute:"patch_publication_date", value:"2015/03/31");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/12");
    
      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) 2015-2019 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\.(\d|1\d|2[0-3])([^0-9]|$)" ||
      version =~ "^1\.23\.[0-8]([^0-9]|$)" ||
      version =~ "^1\.24\.[01]([^0-9]|$)"
    )
    {
      set_kb_item(name:'www/'+port+'/XSS', value:TRUE);
      set_kb_item(name:'www/'+port+'/XSRF', value:TRUE);
    
      if (report_verbosity > 0)
      {
        report =
          '\n  URL               : ' + install_url +
          '\n  Installed version : ' + version +
          '\n  Fixed versions    : 1.19.24 / 1.23.9 / 1.24.2' +
          '\n';
        security_warning(port:port, extra:report);
      }
      else security_warning(port);
    }
    else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201510-05.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201510-05 (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 create a Denial of Service condition, obtain sensitive information, bypass security restrictions, and inject arbitrary web script or HTML. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id86690
    published2015-11-02
    reporterThis script is Copyright (C) 2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/86690
    titleGLSA-201510-05 : 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 201510-05.
    #
    # The advisory text is Copyright (C) 2001-2015 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(86690);
      script_version("$Revision: 2.1 $");
      script_cvs_date("$Date: 2015/11/02 14:33:25 $");
    
      script_cve_id("CVE-2015-2931", "CVE-2015-2932", "CVE-2015-2933", "CVE-2015-2934", "CVE-2015-2935", "CVE-2015-2936", "CVE-2015-2937", "CVE-2015-2938", "CVE-2015-2939", "CVE-2015-2940", "CVE-2015-2941", "CVE-2015-2942", "CVE-2015-6728", "CVE-2015-6729", "CVE-2015-6730", "CVE-2015-6731", "CVE-2015-6732", "CVE-2015-6733", "CVE-2015-6734", "CVE-2015-6735", "CVE-2015-6736", "CVE-2015-6737");
      script_xref(name:"GLSA", value:"201510-05");
    
      script_name(english:"GLSA-201510-05 : 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-201510-05
    (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 create a Denial of Service condition,
          obtain sensitive information, bypass security restrictions, and inject
          arbitrary web script or HTML.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201510-05"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All MediaWiki 1.25 users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.25.2'
        All MediaWiki 1.24 users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.24.3'
        All MediaWiki 1.23 users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=www-apps/mediawiki-1.23.10'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
    
      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:"patch_publication_date", value:"2015/10/31");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/11/02");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015 Tenable Network Security, Inc.");
      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 1.25.2", "rge 1.24.3", "rge 1.23.10"), vulnerable:make_list("lt 1.25.2"))) 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");
    }