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Improper Access Control

CVE-2024-1888

Medium
4.3/10

Summary

Mattermost fails to check the "invite_guest" permission when inviting guests of other teams to a team, allowing a member with permissions to add other members but not to add guests to add a guest to a team as long as the guest was already a guest in another team of the server. This issue affects versions through 8.1.8, 9.0.0-rc1 through 9.0.6, 9.1.0-rc1 through 9.1.5, 9.2.0-rc1 through 9.2.4, 9.3.0-rc1 through 9.3.0, and 9.4.0-rc1 through 9.4.1.

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

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