high
7.5
CWE
400
Advisory Published
CVE Published
Updated

CVE-2021-44716

First published: Thu Dec 09 2021(Updated: )

An attacker can cause unbounded memory growth in a Go server accepting HTTP/2 requests. Reference: <a href="https://github.com/golang/go/issues/50058">https://github.com/golang/go/issues/50058</a>

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

Affected SoftwareAffected VersionHow to fix
redhat/openshift-serverless-clients<0:1.0.0-2.el8
0:1.0.0-2.el8
redhat/go-toolset<1.16-0:1.16.12-1.el7_9
1.16-0:1.16.12-1.el7_9
redhat/go-toolset<1.16-golang-0:1.16.12-1.el7_9
1.16-golang-0:1.16.12-1.el7_9
redhat/grafana<0:7.5.9-5.el8_5
0:7.5.9-5.el8_5
redhat/grafana<0:7.3.6-4.el8_4
0:7.3.6-4.el8_4
redhat/etcd<0:3.3.23-9.el7
0:3.3.23-9.el7
redhat/grafana<0:5.2.4-5.el7
0:5.2.4-5.el7
redhat/cri-o<0:1.23.0-92.rhaos4.10.gitdaab4d1.el7
0:1.23.0-92.rhaos4.10.gitdaab4d1.el7
redhat/openshift<0:4.10.0-202202250816.p0.ge419edf.assembly.stream.el7
0:4.10.0-202202250816.p0.ge419edf.assembly.stream.el7
redhat/containernetworking-plugins<0:0.9.1-2.rhaos4.10.el8
0:0.9.1-2.rhaos4.10.el8
redhat/butane<0:0.13.1-2.rhaos4.9.el8
0:0.13.1-2.rhaos4.9.el8
redhat/ignition<0:2.12.0-3.rhaos4.9.el8
0:2.12.0-3.rhaos4.9.el8
redhat/mcg<0:5.10.0-72.el8
0:5.10.0-72.el8
redhat/etcd<0:3.3.23-7.el8
0:3.3.23-7.el8
redhat/kubevirt<0:4.12.0-1057.el7
0:4.12.0-1057.el7
redhat/kubevirt<0:4.12.0-1057.el8
0:4.12.0-1057.el8
Golang Go<1.16.12
Golang Go>=1.17.0<1.17.5
Debian Debian Linux=9.0
Netapp Cloud Insights Telegraf
redhat/Go<1.17.5
1.17.5
redhat/Go<1.16.12
1.16.12
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
<1.16.12
>=1.17.0<1.17.5
=9.0

Remedy

https://groups.google.com/g/golang-announce/c/hcmEScgc00k

Remedy

This flaw can be mitigated by disabling HTTP/2. Setting the GODEBUG=http2server=0 environment variable before calling Serve will disable HTTP/2 unless it was manually configured through the golang.org/x/net/http2 package.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-44716?

    CVE-2021-44716 is a vulnerability in the net/http library in Go before 1.16.12 and 1.17.x before 1.17.5.

  • What is the severity of CVE-2021-44716?

    CVE-2021-44716 has a severity score of 7.5 (high).

  • How can I exploit CVE-2021-44716?

    CVE-2021-44716 can be exploited by submitting specially crafted requests to applications linked with net/http's http2 functionality.

  • How can I fix CVE-2021-44716?

    To fix CVE-2021-44716, update your Go installation to version 1.16.12 or 1.17.5, depending on the version you are using.

  • Where can I find more information about CVE-2021-44716?

    You can find more information about CVE-2021-44716 in the references provided: [link 1](https://github.com/golang/go/issues/50058), [link 2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2030802), [link 3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2030804).

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