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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-08-08T18:50:05.418Z

Updated: 2024-08-02T18:10:21.375Z

Reserved: 2023-08-03T16:27:36.263Z

Link: CVE-2023-39533

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-08-08T19:15:10.657

Modified: 2023-10-31T19:08:26.883

Link: CVE-2023-39533

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-08-08T00:00:00Z

Links: CVE-2023-39533 - Bugzilla