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Use After Free

CVE-2021-44964

Medium
6.3/10

Summary

Use after free in garbage collector and finalizer of "lgc.c" in Lua interpreter version 5.4.0 through 5.4.3 allows attackers to perform Sandbox Escape via a crafted script file.

  • LOW
  • LOCAL
  • NONE
  • CHANGED
  • REQUIRED
  • NONE
  • NONE
  • HIGH

CWE-416 - Use After Free

Use-after-free (UaF) vulnerability occurs when the application is using a pointer to memory that has been freed. Any attempt to read/write to a buffer after it is de-allocated allows memory corruption, sensitive information exposure, and can potentially lead to arbitrary code execution.

References

Advisory Timeline

  • Published