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Integer Overflow or Wraparound

CVE-2021-21223

Severity High
Score 9.6/10

Summary

Integer overflow in Mojo in Google Chrome prior to 90.0.4430.85 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-190 - Integer Overflow or Wraparound

The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

Advisory Timeline

  • Published