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Veracode Vulnerability DatabaseVERACODE:48419

HistoryAug 08, 2024 - 10:02 a.m.

Improper Access Control

2024-08-0810:02:07

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

improper access control

mattermost server

vulnerability

validation failure

shared channels

remote user

CVSS3

8.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

AI Score

6.9

Confidence

High

EPSS

0.001

Percentile

16.8%

JSON

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is caused due to a failure to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled. This allows a malicious remote user to add users to arbitrary teams and channels.

References

mattermost.com/security-updates

mattermost.com/security-updates/

CVSS3

8.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

AI Score

6.9

Confidence

High

EPSS

0.001

Percentile

16.8%

JSON

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