SB2020070218 - Multiple vulnerabilities in Mattermost Server

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Main Vulnerability Database SB2020070218

SB2020070218 - Multiple vulnerabilities in Mattermost Server

Published: July 2, 2020

Security Bulletin ID SB2020070218
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2020-14458)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application vithin the "get channel by name" API. A remote attacker can gain unauthorized access to sensitive information on the system.


2) Input validation error (CVE-ID: CVE-2020-14459)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can rename a channel and cause a collision with a direct message.


Remediation

Install update from vendor's website.

References