AIKIDO-2026-268967
@libp2p/crypto is vulnerable to Denial of Service (DoS)
75
High Risk
This Affects:
@libp2p/cryptoTL;DR
The RSA DER decoder trusts element length fields without checking them against the remaining buffer. A malformed length can drive a large synchronous loop and allocation, stalling the Node.js event loop and spiking memory. The fix rejects NaN, negative, and out-of-bounds lengths before parsing.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your node runs Identify (enabled by default), which DER-decodes a peer's RSA public key before authentication.
Background info
@libp2p/crypto is vulnerable to Denial of Service (DoS) in versions 5.0.14 - 5.1.21.
How to fix this
Upgrade the @libp2p/crypto library to the patch version.
Are You Affected?
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