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Missing Authorization

CVE-2021-44857

Medium
6.5/10

Summary

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use "action=mcrundo" followed by "action=mcrrestore" to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki or a private wiki that has at least one page set in "$wgWhitelistRead".

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

CWE-862 - Missing Authorization

The missing authorization vulnerability occurs when a software program allows users to access privileged parts of the program without verifying the user credentials. Impact of such a vulnerability depends on the resources employed by the software, ranging from account takeover to sensitive information exposure, denial of service, and complete system takeover.

References

Advisory Timeline

  • Published