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Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVE-2021-38111

Severity Medium
Score 5.8/10

Summary

The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.

  • LOW
  • ADJACENT_NETWORK
  • NONE
  • PARTIAL
  • PARTIAL
  • PARTIAL

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

References

Advisory Timeline

  • Published