Cryptographic Vulnerability in Ethereum's RLPx Protocol from Hyperledger
CVE-2015-20112

3.4LOW

Key Information:

Vendor

Ethereum

Status
Rlpx
Vendor
CVE Published:
29 June 2025

What is CVE-2015-20112?

The RLPx Protocol version 5 has been identified to contain a severe cryptographic design flaw where two CTR (Counter) streams utilize the same key, initialization vector (IV), and nonce. This vulnerability poses significant risks as it could allow an attacker to decrypt traffic across private networks, compromising the confidentiality of transmitted data. Mitigation efforts are crucial to prevent unauthorized access to sensitive information within affected infrastructures.

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Affected Version(s)

RLPx 5

References

https://github.com/hyperledger/besu/issues/7926
https://github.com/ethereum/go-ethereum/issues/1315
https://github.com/ethereum/devp2p/blob/master/rlpx.md#kn...

CVSS V3.1

Score:
3.4
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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