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Mattermost Uncontrolled Resource Consumption vulnerability

Moderate severity GitHub Reviewed Published Sep 29, 2023 to the GitHub Advisory Database • Updated Nov 11, 2023

Package

gomod github.com/mattermost/mattermost-server/v6 (Go)

Affected versions

< 7.8.10

Patched versions

7.8.10
gomod github.com/mattermost/mattermost/server/v8 (Go)
= 8.1.0
>= 8.0.0, < 8.0.2
8.1.1
8.0.2

Description

Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.

References

Published by the National Vulnerability Database Sep 29, 2023
Published to the GitHub Advisory Database Sep 29, 2023
Reviewed Sep 29, 2023
Last updated Nov 11, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.073%
(34th percentile)

Weaknesses

CVE ID

CVE-2023-5196

GHSA ID

GHSA-33r7-wjfc-7w98

Source code

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