Mattermost Server up to 5.7.x Domain Request default permission

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CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability was found in Mattermost Server up to 5.7.x. It has been declared as critical. This vulnerability affects some unknown functionality of the component Domain Handler. The manipulation as part of a Request leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-276. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Mattermost Server before 5.8.0. It does not honor the domain requirement when processing a join request for an open team.

The weakness was disclosed 06/19/2020 (Website). The advisory is shared for download at mattermost.com. This vulnerability was named CVE-2019-20882 since 06/19/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.8.0 eliminates this vulnerability.

The entries 156956, 156957, 156958 and 156959 are pretty similar.

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VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfoedit

Class: Privilege escalation (CWE-276)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Mattermost Server 5.8.0

Timelineinfoedit

06/19/2020 Advisory disclosed
06/19/2020 +0 days CVE assigned
06/20/2020 +1 days VulDB entry created
10/25/2020 +127 days VulDB last update

Sourcesinfoedit

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

CVE: CVE-2019-20882 (🔒)
See also: 🔒

Entryinfoedit

Created: 06/20/2020 08:01 AM
Updated: 10/25/2020 07:04 PM
Changes: (1) advisory_confirm_url
Complete: 🔍

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