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

CVE-2020-21041

High
7.5/10

Summary

Buffer Overflow vulnerability exists in FFmpeg prior to 2.8.20, 3.x prior to 3.2.18 , 3.3.x prior to 3.4.11, 3.5-dev, 4.x prior to 4.1.8, 4.2.x prior to 4.2.7, 4.3.x prior to 4.3.5, and 4.4-dev via "apng_do_inverse_blend" in "libavcodec/pngenc.c", which could let a remote malicious user cause a Denial of Service

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

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