VDB-74798 · CVE-2015-2931 · BID 73477

MediaWiki up to 1.19.23/1.23.8/1.24.1 data: URI UploadBase.php Nested SVG Image cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in MediaWiki up to 1.19.23/1.23.8/1.24.1 (Content Management System). It has been rated as problematic. Affected by this issue is an unknown part of the file includes/upload/UploadBase.php of the component data: URI Handler. The manipulation as part of a Nested SVG Image leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The weakness was presented 03/31/2015 by Bawolff with iSEC Partners (oss-sec). The advisory is available at openwall.com. This vulnerability is handled as CVE-2015-2931 since 04/07/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

By approaching the search of inurl:includes/upload/UploadBase.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 82686 (Mandriva Linux Security Advisory : mediawiki (MDVSA-2015:200)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13127 (Mediawiki Multiple Vulnerabilities (MediaWiki Security Release: 1.19.24, 1.23.9 and 1.24.2)).

Upgrading to version 1.19.24, 1.23.9 or 1.24.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (82686), SecurityFocus (BID 73477†) and Vulnerability Center (SBV-49888†).






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

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Current Price Estimation: 🔍


Nessus ID: 82686
Nessus Name: Mandriva Linux Security Advisory : mediawiki (MDVSA-2015:200)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 801900
OpenVAS Name: MediaWiki Multiple Vulnerabilities - Mar15 (Windows)
OpenVAS File: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MediaWiki 1.19.24/1.23.9/1.24.2


03/31/2015 🔍
03/31/2015 +0 days 🔍
04/07/2015 +7 days 🔍
04/10/2015 +3 days 🔍
04/13/2015 +3 days 🔍
04/13/2015 +0 days 🔍
04/14/2015 +1 days 🔍
04/27/2015 +13 days 🔍
05/03/2022 +2563 days 🔍


Product: mediawiki.org

Advisory: openwall.com
Researcher: Bawolff
Organization: iSEC Partners
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2931 (🔍)
SecurityFocus: 73477 - MediaWiki Multiple Security Vulnerabilities
Vulnerability Center: 49888 - MediaWiki 1.1x and 1.2x Remote XSS \, Medium


Created: 04/14/2015 09:52 AM
Updated: 05/03/2022 08:50 PM
Changes: 04/14/2015 09:52 AM (66), 06/27/2017 03:52 AM (10), 05/03/2022 08:50 PM (3)
Complete: 🔍
Cache ID: 3:4A3:40


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