7.5
CWE
1284 287
Advisory Published
CVE Published
Updated

CVE-2022-23635: Unauthenticated control plane denial of service attack in Istio

First published: Tue Feb 22 2022(Updated: )

A flaw was found in istio. This flaw allows an attacker to send a specially crafted message to isitiod, causing the control plane to crash.

Credit: security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
redhat/servicemesh<0:2.0.9-3.el8
0:2.0.9-3.el8
redhat/servicemesh<0:2.1.2-4.el8
0:2.1.2-4.el8
redhat/Istio<1.13.1
1.13.1
redhat/Istio<1.12.4
1.12.4
redhat/Istio<1.11.7
1.11.7
Istio Istio<1.11.7
Istio Istio>=1.12.0<1.12.4
Istio Istio>=1.13.0<1.13.1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2022-23635?

    CVE-2022-23635 is a vulnerability in the Istio control plane that allows a malicious attacker to crash the control plane by sending a specially crafted message.

  • How does CVE-2022-23635 affect Istio?

    CVE-2022-23635 affects the Istio control plane, specifically the `istiod` component.

  • What is the severity of CVE-2022-23635?

    The severity of CVE-2022-23635 is rated as high (7.5).

  • How can I fix CVE-2022-23635?

    You can fix CVE-2022-23635 by updating to Istio version 1.11.7, 1.12.4, or 1.13.1 or higher, depending on the affected version.

  • Where can I find more information about CVE-2022-23635?

    You can find more information about CVE-2022-23635 at the following references: [CVE Details](https://www.cve.org/CVERecord?id=CVE-2022-23635), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-23635), [Istio Security Advisory](https://istio.io/latest/news/security/istio-security-2022-003), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2057277), [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2022:1276).

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