MediaWiki up to 1.23.14/1.26.3/1.27.0 CSS User Subpage Preview common.css cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in MediaWiki up to 1.23.14/1.26.3/1.27.0. Affected by this issue is some unknown functionality of the file Special:MyPage/common.css of the component CSS User Subpage Preview. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2016-6333. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MediaWiki up to 1.23.14/1.26.3/1.27.0 (Content Management System). It has been classified as problematic. This affects some unknown processing of the file Special:MyPage/common.css of the component CSS User Subpage Preview. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css.

The bug was discovered 04/20/2017. The weakness was published 04/20/2017 (Website). The advisory is shared at lists.wikimedia.org. This vulnerability is uniquely identified as CVE-2016-6333 since 07/26/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 93195 (MediaWiki 1.23.x < 1.23.15 / 1.26.x < 1.26.4 / 1.27.x < 1.27.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11684 (Mediawiki Multiple Vulnerabilities (MediaWiki Security Release: 1.27.1, 1.26.4, 1.23.15)).

Upgrading to version 1.23.15 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (93195) and SecurityFocus (BID 98053†). Similar entries are available at VDB-100363, VDB-100364, VDB-100366 and VDB-100367. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Content Management System

Name

• MediaWiki

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.23.0
• 1.23.1
• 1.23.2
• 1.23.3
• 1.23.4
• 1.23.5
• 1.23.6
• 1.23.7
• 1.23.8
• 1.23.9
• 1.23.10
• 1.23.11
• 1.23.12
• 1.23.13
• 1.23.14
• 1.24
• 1.25
• 1.26
• 1.26.0
• 1.26.1
• 1.26.2
• 1.26.3
• 1.27.0

License

• open-source

Website

• Product: https://www.mediawiki.org/wiki/MediaWiki

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 93195
Nessus Name: MediaWiki 1.23.x < 1.23.15 / 1.26.x < 1.26.4 / 1.27.x < 1.27.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for mediawiki FEDORA-2016-ce1678471e
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MediaWiki 1.23.15

Timelineinfo

07/26/2016 🔍
08/23/2016 +28 days 🔍
08/29/2016 +6 days 🔍
04/20/2017 +234 days 🔍
04/20/2017 +0 days 🔍
04/20/2017 +0 days 🔍
04/21/2017 +1 days 🔍
04/21/2017 +0 days 🔍
04/23/2017 +1 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: lists.wikimedia.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6333 (🔍)
GCVE (CVE): GCVE-0-2016-6333
GCVE (VulDB): GCVE-100-100365
SecurityFocus: 98053 - Mediawiki 'Special:MyPage/common.css' Cross-Site Scripting Vulnerability
OSVDB: - CVE-2016-6333 - MediaWiki - Cross-Site Scripting Issue

See also: 🔍

Entryinfo

Created: 04/21/2017 09:54
Changes: 04/21/2017 09:54 (80)
Complete: 🔍
Cache ID: 216::103

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