Mattermost Server up to 5.21.x Markdown Renderer denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Mattermost Server up to 5.21.x. Affected by this issue is some unknown functionality of the component Markdown Renderer. The manipulation results in denial of service. This vulnerability is identified as CVE-2020-14450. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mattermost Server up to 5.21.x. Affected is some unknown functionality of the component Markdown Renderer. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in Mattermost Server before 5.22.0. The markdown renderer allows attackers to cause a denial of service (client-side), aka MMSA-2020-0017.

The weakness was released 06/19/2020 (Website). The advisory is available at mattermost.com. This vulnerability is traded as CVE-2020-14450 since 06/19/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 5.22.0 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-156956, VDB-156957, VDB-156958 and VDB-156959. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

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

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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost Server 5.22.0

Timelineinfo

06/19/2020 🔍
06/19/2020 +0 days 🔍
06/20/2020 +1 days 🔍
10/25/2020 +127 days 🔍

Sourcesinfo

Advisory: mattermost.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-14450 (🔍)
GCVE (CVE): GCVE-0-2020-14450
GCVE (VulDB): GCVE-100-157026
See also: 🔍

Entryinfo

Created: 06/20/2020 08:07
Updated: 10/25/2020 20:19
Changes: 06/20/2020 08:07 (39), 06/20/2020 08:12 (17), 10/25/2020 20:19 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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