high
7.5
CWE
74 79 20
Advisory Published
CVE Published
Updated

CVE-2021-33195: XSS

First published: Tue May 18 2021(Updated: )

A flaw was found in Go. The LookupCNAME, LookupSRV, LookupMX, LookupNS, and LookupAddr functions in the net package and methods on the Resolver type, may return arbitrary values retrieved from DNS, allowing injection of unexpected contents. The highest threat from this vulnerability is to integrity.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/openshift-serverless-clients<0:0.23.2-1.el8
0:0.23.2-1.el8
redhat/go-toolset<1.15-golang-0:1.15.14-2.el7_9
1.15-golang-0:1.15.14-2.el7_9
redhat/grafana<0:7.5.9-4.el8
0:7.5.9-4.el8
redhat/buildah<1:1.27.0-2.el9
1:1.27.0-2.el9
redhat/ignition<0:2.6.0-8.rhaos4.6.git947598e.el8
0:2.6.0-8.rhaos4.6.git947598e.el8
redhat/atomic-openshift-service-idler<0:4.7.0-202107291238.p0.git.39cfc66.assembly.stream.el8
0:4.7.0-202107291238.p0.git.39cfc66.assembly.stream.el8
redhat/cri-o<0:1.20.4-7.rhaos4.7.git6287500.el7
0:1.20.4-7.rhaos4.7.git6287500.el7
redhat/ignition<0:2.9.0-4.rhaos4.7.git1d56dc8.el8
0:2.9.0-4.rhaos4.7.git1d56dc8.el8
redhat/openshift<0:4.7.0-202107292242.p0.git.558d959.assembly.stream.el7
0:4.7.0-202107292242.p0.git.558d959.assembly.stream.el7
redhat/openshift-clients<0:4.7.0-202107292242.p0.git.8b4b094.assembly.stream.el8
0:4.7.0-202107292242.p0.git.8b4b094.assembly.stream.el8
redhat/redhat-release-coreos<0:47.84-1.el8
0:47.84-1.el8
redhat/cri-o<0:1.21.2-8.rhaos4.8.git8d4264e.el7
0:1.21.2-8.rhaos4.8.git8d4264e.el7
redhat/ignition<0:2.9.0-7.rhaos4.8.el8
0:2.9.0-7.rhaos4.8.el8
redhat/openshift<0:4.8.0-202107300027.p0.git.38b3ecc.assembly.stream.el7
0:4.8.0-202107300027.p0.git.38b3ecc.assembly.stream.el7
redhat/openshift-clients<0:4.8.0-202107292313.p0.git.1077b05.assembly.stream.el7
0:4.8.0-202107292313.p0.git.1077b05.assembly.stream.el7
redhat/containernetworking-plugins<0:0.8.6-3.rhaos4.6.el7
0:0.8.6-3.rhaos4.6.el7
redhat/cri-tools<0:1.21.0-3.el8
0:1.21.0-3.el8
redhat/golang-github-prometheus-promu<0:0.5.0-4.git642a960.el8
0:0.5.0-4.git642a960.el8
redhat/butane<0:0.12.1-2.rhaos4.8.el8
0:0.12.1-2.rhaos4.8.el8
redhat/mcg<0:5.9.0-28.61dcf87.5.9.el8
0:5.9.0-28.61dcf87.5.9.el8
redhat/etcd<0:3.3.23-3.1.el8
0:3.3.23-3.1.el8
redhat/kubevirt<0:2.6.10-230.el7
0:2.6.10-230.el7
redhat/kubevirt<0:4.8.5-278.el7
0:4.8.5-278.el7
redhat/kubevirt<0:2.6.10-230.el8
0:2.6.10-230.el8
redhat/kubevirt<0:4.8.5-278.el8
0:4.8.5-278.el8
Golang Go<1.15.13
Golang Go>=1.16.0<1.16.5
Netapp Cloud Insights Telegraf Agent
redhat/go<1.16.5
1.16.5
redhat/go<1.15.13
1.15.13
IBM Security Guardium Insights<=3.0

Remedy

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

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-33195?

    CVE-2021-33195 is a vulnerability in Go before 1.15.13 and 1.16.x before 1.16.5 that could allow a remote attacker to execute arbitrary code on the system.

  • What is the severity of CVE-2021-33195?

    CVE-2021-33195 has a severity rating of 7.5 (High).

  • Which functions in Go are affected by CVE-2021-33195?

    The LookupCNAME, LookupSRV, LookupMX, LookupNS, and LookupAddr functions in net are affected by CVE-2021-33195.

  • How can I fix CVE-2021-33195?

    You can fix CVE-2021-33195 by updating to Go version 1.15.13 or 1.16.5.

  • Where can I find more information about CVE-2021-33195?

    You can find more information about CVE-2021-33195 in the following references: [link1](https://github.com/golang/go/issues/46241), [link2](https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI), [link3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1989568).

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