CVE-2022-23635

 

Published at: - 22-02-2022 11:15

Last modified: - 01-03-2022 09:45

Total changes: - 4

Description

Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://istio.io/latest/news/security/istio-security-2022-003
• https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84
• https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f

 

Keywords

NVD

 

CVE-2022-23635

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures