VDB-162044 · CVE-2020-26121 · GCVE-0-2020-26121

FileImporter Extension up to 1.34.3 on MediaWiki Page Creation privileges management

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in FileImporter Extension up to 1.34.3 on MediaWiki. This vulnerability affects unknown code of the component Page Creation. Such manipulation leads to privileges management. This vulnerability is traded as CVE-2020-26121. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in FileImporter Extension up to 1.34.3 on MediaWiki. It has been rated as critical. Affected by this issue is an unknown functionality of the component Page Creation. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in the FileImporter extension for MediaWiki before 1.34.4. An attacker can import a file even when the target page is protected against "page creation" and the attacker should not be able to create it. This occurs because of a mishandled distinction between an upload restriction and a create restriction. An attacker cannot leverage this to overwrite anything, but can leverage this to force a wiki to have a page with a disallowed title.

The weakness was shared 09/27/2020. This vulnerability is handled as CVE-2020-26121 since 09/27/2020. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.34.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

FileImporter Extension

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FileImporter Extension 1.34.4

Timelineinfo

09/27/2020 🔍
09/27/2020 +0 days 🔍
09/28/2020 +1 days 🔍
11/14/2020 +47 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-26121 (🔍)
GCVE (CVE): GCVE-0-2020-26121
GCVE (VulDB): GCVE-100-162044

Entryinfo

Created: 09/28/2020 07:22
Updated: 11/14/2020 18:33
Changes: 09/28/2020 07:22 (36), 09/28/2020 07:27 (3), 11/13/2020 07:58 (3), 11/14/2020 18:33 (8)
Complete: 🔍
Cache ID: 216::103