CVE-2020-26264: Uncontrolled Resource Consumption

December 11, 2020 (updated December 14, 2020)

Go Ethereum, or Geth, is the official Golang implementation of the Ethereum protocol. In Geth a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit.

References

nvd.nist.gov/vuln/detail/CVE-2020-26264

Code Behaviors & Features

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