high
7.5
CWE
327
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2022-27191

First published: Tue Mar 15 2022(Updated: )

A broken cryptographic algorithm flaw was found in golang.org/x/crypto/ssh. This issue causes a client to fail authentication with RSA keys to servers that reject signature algorithms based on SHA-2, enabling an attacker to crash the server, resulting in a loss of availability.

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Golang Ssh<0.0.0-20220314234659-1baeb1ce4c0b
Fedoraproject Extra Packages For Enterprise Linux=8.0
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Redhat Advanced Cluster Management For Kubernetes=2.0
Redhat Enterprise Linux=7.0
Redhat Enterprise Linux=8.0
go/golang.org/x/crypto<0.0.0-20220314234659-1baeb1ce4c0b
0.0.0-20220314234659-1baeb1ce4c0b
redhat/openshift-serverless-clients<0:1.5.0-3.el8
0:1.5.0-3.el8
redhat/podman<2:4.2.0-3.el9
2:4.2.0-3.el9
redhat/buildah<1:1.27.0-2.el9
1:1.27.0-2.el9
redhat/cri-o<0:1.24.1-11.rhaos4.11.gitb0d2ef3.el8
0:1.24.1-11.rhaos4.11.gitb0d2ef3.el8
redhat/openshift-clients<0:4.13.0-202305291355.p0.g1024efc.assembly.stream.el8
0:4.13.0-202305291355.p0.g1024efc.assembly.stream.el8
redhat/kubevirt<0:4.11.0-643.el7
0:4.11.0-643.el7
redhat/kubevirt<0:4.11.0-643.el8
0:4.11.0-643.el8
redhat/golang.org/x/crypto/ssh v0.0.0-20220315160706<3147
3147
IBM Cloud Pak for Security<=1.10.0.0 - 1.10.11.0
IBM QRadar Suite Software<=1.10.12.0 - 1.10.16.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2022-27191?

    CVE-2022-27191 is a vulnerability in the golang.org/x/crypto/ssh package that allows an attacker to crash a server by failing authentication with RSA keys.

  • What is the severity of CVE-2022-27191?

    CVE-2022-27191 has a severity level of high.

  • How does CVE-2022-27191 affect golang.org/x/crypto/ssh?

    CVE-2022-27191 causes a client to fail authentication with RSA keys to servers that reject SHA-2 signature algorithms.

  • How can I fix CVE-2022-27191?

    To fix CVE-2022-27191, upgrade to golang.org/x/crypto/ssh version 0.0.0-20220314234659-1baeb1ce4c0b or later.

  • Are there any references for CVE-2022-27191?

    Yes, you can find references for CVE-2022-27191 at the following links: [link1], [link2], [link3].

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