CVE-2024-1402

Denial of service in mattermost mobile apps and server via emoji reactions

State: Published
Severity: 4.3 Medium
Published: Feb 9, 2024
Updated: Aug 1, 2024
Reserved: Feb 9, 2024

Description

Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	Mattermost

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
MattermostMattermost	8.1.7 and earlierAffected 9.1.4 and earlierAffected 9.2.3 and earlierAffected 9.3.0Not affected 9.2.4Not affected 9.1.5Not affected 8.1.8Not affected

References

https://mattermost.com/security-updates

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