Skip to main content

Out-of-bounds Write

CVE-2024-45776

Medium
6.7/10

Summary

When reading the language ".mo" file in "grub_mofile_open()", grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted ".mo" file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections. Affected versions are Grub2 versions 2.00 through 2.12.

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

CWE-787 - Out-of-Bounds Write

Out-of-bounds write vulnerability is a memory access bug that allows software to write data past the end or before the beginning of the intended buffer. This may result in the corruption of data, a crash, or arbitrary code execution.

References

Advisory Timeline

  • Published