VDB-173291 · CVE-2021-31553 · GCVE-0-2021-31553

CheckUser Extension up to 1.35.2 on MediaWiki Database Table denial of service

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.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in CheckUser Extension up to 1.35.2 on MediaWiki. This affects an unknown function of the component Database Table Handler. The manipulation leads to denial of service. This vulnerability is documented as CVE-2021-31553. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in CheckUser Extension up to 1.35.2 on MediaWiki and classified as problematic. This issue affects some unknown processing of the component Database Table Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was released 04/22/2021. It is possible to read the advisory at phabricator.wikimedia.org. The identification of this vulnerability is CVE-2021-31553. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at gerrit.wikimedia.org.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

CheckUser Extension

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: gerrit.wikimedia.org

Timelineinfo

04/22/2021 🔍
04/22/2021 +0 days 🔍
04/22/2021 +0 days 🔍
04/28/2021 +6 days 🔍

Sourcesinfo

Advisory: phabricator.wikimedia.org
Status: Confirmed

CVE: CVE-2021-31553 (🔍)
GCVE (CVE): GCVE-0-2021-31553
GCVE (VulDB): GCVE-100-173291

Entryinfo

Created: 04/22/2021 09:04
Updated: 04/28/2021 09:25
Changes: 04/22/2021 09:04 (38), 04/23/2021 20:35 (5), 04/28/2021 09:25 (18)
Complete: 🔍
Cache ID: 216::103