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Integer Overflow or Wraparound

CVE-2024-45779

Medium
6/10

Summary

An Integer Overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an Integer Overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash. This issue affects versions prior to 2.06-rc1.

  • LOW
  • LOCAL
  • NONE
  • UNCHANGED
  • NONE
  • HIGH
  • HIGH
  • HIGH

CWE-190 - Integer Overflow or Wraparound

The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

References

Advisory Timeline

  • Published