CVE-2023-395337.5HighCWE-770

CVE-2023-39533: libp2p nodes vulnerable to attack using large RSA keys

libp2p · go-libp2p

Affected: libp2p go-libp2p · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.5%probability of exploitation in the next 30 days

74th percentile

050100

Higher than 74% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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 products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

libp2p · go-libp2p< 0.27.8; >= 0.28.0, < 0.28.2; = 0.29.0

On the Atlas

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Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Allocation Without Limits · Denial of Service
Vendor: libp2p
Published: August 2023
Band: Possible (1 to 10%), August 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-39533 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.