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 Software | Affected Version | How 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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Reference Links
- https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84
- https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f
- https://istio.io/latest/news/security/istio-security-2022-003
- https://istio.io/latest/docs/setup/install/multicluster/primary-remote/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2052107
- https://access.redhat.com/errata/RHSA-2022:1276
- https://access.redhat.com/errata/RHSA-2022:1275
- https://access.redhat.com/security/cve/cve-2022-23635
- https://bugzilla.redhat.com/show_bug.cgi?id=2057277
- https://www.cve.org/CVERecord?id=CVE-2022-23635 https://nvd.nist.gov/vuln/detail/CVE-2022-23635 https://istio.io/latest/news/security/istio-security-2022-003
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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