MediaWiki up to 1.27.0 Access Restriction getAllowedUserRights access control

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in MediaWiki up to 1.27.0 and classified as critical. Impacted is the function Session::getAllowedUserRights of the component Access Restriction. This manipulation causes access control. The identification of this vulnerability is CVE-2016-6337. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in MediaWiki up to 1.27.0 (Content Management System). Affected by this vulnerability is the function Session::getAllowedUserRights of the component Access Restriction. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

MediaWiki 1.27.x before 1.27.1 might allow remote attackers to bypass intended session access restrictions by leveraging a call to the UserGetRights function after Session::getAllowedUserRights.

The bug was discovered 04/20/2017. The weakness was shared 04/20/2017 (Website). The advisory is shared at lists.wikimedia.org. This vulnerability is known as CVE-2016-6337 since 07/26/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 T1068 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 1.27.1 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 vulnerability database at Tenable (93195). The entries VDB-100363, VDB-100364, VDB-100365 and VDB-100366 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Name

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 801900
OpenVAS Name: MediaWiki Multiple Vulnerabilites - Aug16 (Windows)
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 1.27.1

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 🔍
09/18/2020 +1246 days 🔍

Sourcesinfo

Product: mediawiki.org

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

CVE: CVE-2016-6337 (🔍)
GCVE (CVE): GCVE-0-2016-6337
GCVE (VulDB): GCVE-100-100369
OSVDB: - CVE-2016-6337 - MediaWiki - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 04/21/2017 09:56
Updated: 09/18/2020 20:04
Changes: 04/21/2017 09:56 (74), 09/18/2020 20:04 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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