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CVE-2019-20844

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Date: June 19, 2020

An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. An attacker can spoof a direct-message channel by changing the type of a channel.

Language: Go

Severity Score

Severity Score

Weakness Type (CWE)

Improper Enforcement of Message Integrity During Transmission in a Communication Channel

CWE-924

Top Fix

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Upgrade Version

Upgrade to version 5.18.0,5.17.2,5.16.4,5.15.4,5.9.7

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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