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GoogleOSV:GHSA-6MX3-9QFH-77GJ

HistoryFeb 29, 2024 - 9:30 a.m.

Mattermost denial of service through long emoji value

2024-02-2909:30:34

Google

osv.dev

mattermost

denial of service

emoji

validation

custom user status

resource consumption

server crash

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

JSON

Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.

CPENameOperatorVersion
github.com/mattermost/mattermost/server/v8ge9.3.0
github.com/mattermost/mattermost/server/v8lt8.1.9
github.com/mattermost/mattermost/server/v8lt9.2.5
github.com/mattermost/mattermost/server/v8lt9.3.1
github.com/mattermost/mattermost/server/v8ge9.2.0

Name	Operator	Version
github.com/mattermost/mattermost/server/v8	ge	9.3.0
github.com/mattermost/mattermost/server/v8	lt	8.1.9
github.com/mattermost/mattermost/server/v8	lt	9.2.5
github.com/mattermost/mattermost/server/v8	lt	9.3.1
github.com/mattermost/mattermost/server/v8	ge	9.2.0

References

github.com/mattermost/mattermost

mattermost.com/security-updates

nvd.nist.gov/vuln/detail/CVE-2024-24988

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

JSON

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