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Improper Access Control

CVE-2024-39837

Medium
5.4/10

Summary

In github.com/mattermost/mattermost package versions 9.5.0 through 9.5.7-rc1, and 9.9.0-rc1 through 9.9.1-rc1 fail to properly restrict channel creation, which allows a malicious remote to create arbitrary channels when shared channels were enabled.

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