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Improper Access Control

CVE-2024-6428

Medium
6.5/10

Summary

Mattermost versions 9.5.0-rc1 through 9.5.5, 9.6.0-rc1 through 9.6.2, 9.7.0-rc1 through 9.7.4, 9.8.0-rc1 through 9.8.0, 9.9.0-rc1, and 9.9.0-rc2, fail to prevent specifying a "RemoteId" when creating a new user which allows an attacker to specify both a "remoteId" and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • LOW

CWE-284 - Improper Access Control

Listed 5th in the 'OWASP Top Ten', improper (or broken) access control attacks are a fundamental type of vulnerability. This includes a broad range of design flaws that enable users to act outside of their intended permissions. They can use these privileges to gain access to restricted files and functionality such as accessing restricted information, falsifying records, destroying data, or executing commands.

References

Advisory Timeline

  • Published