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Unchecked Return Value

CVE-2022-23626

High
8.8/10

Summary

m1k1o/blog is a lightweight self-hosted facebook-styled PHP blog. Errors from functions `imagecreatefrom*` and `image*` have not been checked properly. Although PHP issued warnings and the upload function returned `false`, the original file (that could contain a malicious payload) was kept on the disk. Users are advised to upgrade as soon as possible. There are no known workarounds for this issue.

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

CWE-252 - Unchecked Return Value

The software does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.

References

Advisory Timeline

  • Published