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GHSA-wj37-mpq9-xrcm

Mattermost fails to limit the number of active sessions

Source: GitHub Advisory Database (reviewed) Moderate CVE-2024-4183

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-server >= 9.6.0-rc1, < 9.6.1 9.6.1
Go github.com/mattermost/mattermost-server >= 9.5.0, < 9.5.3 9.5.3
Go github.com/mattermost/mattermost-server >= 9.4.0, < 9.4.5 9.4.5
Go github.com/mattermost/mattermost-server >= 8.1.0, < 8.1.12 8.1.12

Details

As written in the advisory (Markdown source, shown as plain text).

Mattermost versions 8.1.x before 8.1.12, 9.6.x before 9.6.1, 9.5.x before 9.5.3, 9.4.x before 9.4.5 fail to limit the number of active sessions, which allows an authenticated attacker to crash the server via repeated requests to the getSessions API after flooding the sessions table.

References

External links from the advisory. They lead to third-party sites.