CVE-2021-27918
First published: Wed Mar 10 2021(Updated: )
An infinite loop vulnerability was found in golang. If an application defines a custom token parser initializing with `xml.NewTokenDecoder` it is possible for the parsing loop to never return. An attacker could potentially craft a malicious XML document which has an XML element with `EOF` within it, causing the parsing application to endlessly loop, resulting in a Denial of Service (DoS).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/go | <1.15.9 | 1.15.9 |
| redhat/go | <1.16.1 | 1.16.1 |
| redhat/openshift-serverless-clients | <0:0.22.0-3.el8 | 0:0.22.0-3.el8 |
| redhat/openshift-serverless-clients | <0:0.23.2-1.el8 | 0:0.23.2-1.el8 |
| Golang Go | <1.15.9 | |
| Golang Go | >=1.16.0<1.16.1 | |
| 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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/198075
- https://www.ibm.com/support/pages/node/7080058 (Advisory)
- https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw
- https://security.gentoo.org/glsa/202208-02
- https://github.com/golang/go/blob/e71b61180aa19a60c23b3b7e3f6586726ebe4fd1/src/encoding/xml/xml.go#L289
- https://github.com/golang/go/commit/d86e53e896eca907ad67300c0bb495e3dd925358
- https://github.com/golang/go/commit/91062c2e4cbbf78a108919f6ed3ded1173937cf3
- https://access.redhat.com/errata/RHSA-2021:2704
- https://access.redhat.com/errata/RHSA-2021:2705
- https://access.redhat.com/security/cve/cve-2021-27918
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1937901#c30
- https://ctron.github.io/openshift-update-graph/#fast-4.8
- https://docs.openshift.com/container-platform/4.8/release_notes/versioning-policy.html
- https://access.redhat.com/errata/RHSA-2021:3076
- https://bugzilla.redhat.com/show_bug.cgi?id=1937901
- https://www.cve.org/CVERecord?id=CVE-2021-27918 https://nvd.nist.gov/vuln/detail/CVE-2021-27918 https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw
- https://access.redhat.com/errata/RHSA-2021:3556
- https://access.redhat.com/errata/RHSA-2021:3555
- https://access.redhat.com/errata/RHBA-2021:3003
- https://access.redhat.com/security/cve/CVE-2021-27918
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-27918?
CVE-2021-27918 is an infinite loop vulnerability found in Golang versions before 1.15.9 and 1.16.x before 1.16.1.
What is the severity of CVE-2021-27918?
CVE-2021-27918 has a severity level of high.
How does CVE-2021-27918 affect the software?
CVE-2021-27918 affects Golang versions before 1.15.9 and 1.16.x before 1.16.1, as well as certain versions of openshift-serverless-clients.
How can I fix CVE-2021-27918?
To fix CVE-2021-27918, update your Golang installation to version 1.15.9 or higher.
Where can I find more information about CVE-2021-27918?
You can find more information about CVE-2021-27918 at the following references: [CVE-2021-27918](https://www.cve.org/CVERecord?id=CVE-2021-27918), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2021-27918), [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1937901), [Red Hat Advisory](https://access.redhat.com/errata/RHSA-2021:2705).
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- version/ibm cloud pak for security/1.10.0.0 - 1.10.11.0
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- version/ibm qradar suite software/1.10.12.0 - 1.10.16.0