GHSA-876p-8259-xjgg

Suggest an improvement
Source
https://github.com/advisories/GHSA-876p-8259-xjgg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/08/GHSA-876p-8259-xjgg/GHSA-876p-8259-xjgg.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-876p-8259-xjgg
Aliases
Related
Published
2023-08-09T13:18:18Z
Modified
2023-12-06T01:03:11.028821Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
libp2p nodes vulnerable to attack using large RSA keys
Details

Impact

A 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 now restricts RSA keys to <= 8192 bits.

Patches

Users should upgrade their go-libp2p versions to >=v0.27.8, >= v0.28.2, or >=v0.29.1 To protect your application, it's necessary to update to these patch releases AND to use the updated Go compiler (1.20.7 or 1.19.12, respectively)

Workarounds

There are no known workarounds

References

The Golang crypto/tls package also had this vulnerability ("verifying certificate chains containing large RSA keys is slow” https://github.com/golang/go/issues/61460) Fix in golang/go crypto/tls: https://github.com/golang/go/commit/2350afd2e8ab054390e284c95d5b089c142db017 Fix in quic-go https://github.com/quic-go/quic-go/pull/4012

Database specific
{
    "nvd_published_at": "2023-08-08T19:15:10Z",
    "cwe_ids": [
        "CWE-770"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2023-08-09T13:18:18Z"
}
References

Affected packages

Go / github.com/libp2p/go-libp2p

Package

Name
github.com/libp2p/go-libp2p
View open source insights on deps.dev
Purl
pkg:golang/github.com/libp2p/go-libp2p

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.27.8

Go / github.com/libp2p/go-libp2p

Package

Name
github.com/libp2p/go-libp2p
View open source insights on deps.dev
Purl
pkg:golang/github.com/libp2p/go-libp2p

Affected ranges

Type
SEMVER
Events
Introduced
0.28.0
Fixed
0.28.2

Go / github.com/libp2p/go-libp2p

Package

Name
github.com/libp2p/go-libp2p
View open source insights on deps.dev
Purl
pkg:golang/github.com/libp2p/go-libp2p

Affected ranges

Type
SEMVER
Events
Introduced
0.29.0
Fixed
0.29.1

Affected versions

0.*

0.29.0