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Use After Free

CVE-2020-6493

Severity High
Score 9.6/10

Summary

Use after free in WebAuthentication in Google Chrome prior to 83.0.4103.97 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

  • LOW
  • NETWORK
  • HIGH
  • CHANGED
  • REQUIRED
  • NONE
  • HIGH
  • 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