Libp2P
CVE-2023-39533
HIGH
GHSA-876p-8259-xjgg
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could exhaust system resources through uncontrolled allocation by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
go-libp2p is the Go implementation of the libp2p Networking Stack. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Set resource limits, implement rate limiting, validate input sizes.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. 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 include: Libp2P Go-Libp2P.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
Denial-of-service in libp2p-rendezvous ≤0.17.1 (Rust) allows a malicious rendezvous server to crash any connecting clien
Address-book poisoning in the @libp2p/peer-store component of js-libp2p (8.0.0 up to, but not including, 12.0.24) allows
Uncontrolled resource consumption in py-libp2p's yamux stream multiplexer allows any remote peer that completes a standa
Forged message authorship in @libp2p/gossipsub 15.0.0 through 16.0.4 lets an unauthenticated, remote attacker sign a gos
Remote unauthenticated denial of service in rust-libp2p Gossipsub affects versions prior to 0.49.5 and allows any peer t
Rust Yamux prior to version 0.13.10 is vulnerable to denial of service when processing specially crafted inbound stream
Unauthenticated remote denial of service in @libp2p/webrtc (the js-libp2p WebRTC transport) before 6.0.28 lets a single
Unauthenticated denial of service in @libp2p/floodsub before 11.0.26 (packaged with js-libp2p < 11.0.26) lets a remote p
Unbounded abort listener accumulation in js-libp2p's circuit-relay-v2 relay server allows any remote peer to exhaust mem
libp2p is a networking stack and library modularized out of The IPFS Project, and bundled separately for other tools to
go-libp2p is the offical libp2p implementation in the Go programming language. Rated high severity (CVSS 7.5), this vuln
js-libp2p is the official javascript Implementation of libp2p networking stack. Rated high severity (CVSS 7.5), this vul
Exploit-DB