MediaWiki up to 1.36.2 Parser egLoopsCountLimit memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in MediaWiki up to 1.36.2. This vulnerability affects unknown code of the component Parser. Performing a manipulation of the argument egLoopsCountLimit results in memory allocation. This vulnerability is known as CVE-2021-42040. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in MediaWiki up to 1.36.2 (Content Management System). This affects some unknown processing of the component Parser. The manipulation of the argument egLoopsCountLimit with an unknown input leads to a memory allocation vulnerability. CWE is classifying the issue as CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. This is going to have an impact on availability.

The weakness was published 10/07/2021. The advisory is shared at gerrit.wikimedia.org. This vulnerability is uniquely identified as CVE-2021-42040 since 10/06/2021. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

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

CVSSv2info

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

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/06/2021 🔍
10/07/2021 +1 days 🔍
10/07/2021 +0 days 🔍
10/09/2021 +2 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: gerrit.wikimedia.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-42040 (🔍)
GCVE (CVE): GCVE-0-2021-42040
GCVE (VulDB): GCVE-100-183945

Entryinfo

Created: 10/07/2021 07:57
Updated: 10/09/2021 19:08
Changes: 10/07/2021 07:57 (39), 10/09/2021 19:08 (1)
Complete: 🔍
Cache ID: 216::103

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

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