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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2023-39533

libp2p nodes vulnerable to attack using large RSA keys

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

go-libp2p is the Go implementation of the libp2p Networking Stack. Prior to versions 0.27.8, 0.28.2, and 0.29.1 malicious peer can use large RSA keys to run a resource exhaustion attack & force a node to spend time doing signature verification of the large key. This vulnerability is present in the core/crypto module of go-libp2p and can occur during the Noise handshake and the libp2p x509 extension verification step. To prevent this attack, go-libp2p versions 0.27.8, 0.28.2, and 0.29.1 restrict RSA keys to <= 8192 bits. To protect one's application, it is necessary to update to these patch releases and to use the updated Go compiler in 1.20.7 or 1.19.12. There are no known workarounds for this issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

libp2p go-libp2p

  • < 0.27.8affected
  • >= 0.28.0, < 0.28.2affected
  • = 0.29.0affected

References