GO-2021-0356

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Source

https://pkg.go.dev/vuln/GO-2021-0356

Import Source

https://vuln.go.dev/ID/GO-2021-0356.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2021-0356

Aliases

Published

2022-04-25T20:38:40Z

Modified

2024-05-20T16:03:47Z

Summary

Denial of service via crafted Signer in golang.org/x/crypto/ssh

Details

Attackers can cause a crash in SSH servers when the server has been configured by passing a Signer to ServerConfig.AddHostKey such that 1) the Signer passed to AddHostKey does not implement AlgorithmSigner, and 2) the Signer passed to AddHostKey returns a key of type “ssh-rsa” from its PublicKey method.

Servers that only use Signer implementations provided by the ssh package are unaffected.

References

Affected packages

Go / golang.org/x/crypto

Package

Name: golang.org/x/crypto; View open source insights on deps.dev
Purl: pkg:golang/golang.org/x/crypto

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.0.0-20220314234659-1baeb1ce4c0b

Ecosystem specific

{
    "imports": [
        {
            "path": "golang.org/x/crypto/ssh",
            "symbols": [
                "ServerConfig.AddHostKey"
            ]
        }
    ]
}