Improper Authentication Affecting servicemesh-proxy package, versions <0:2.1.2-4.el8


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (57th percentile)

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  • Snyk IDSNYK-RHEL8-SERVICEMESHPROXY-4398398
  • published26 Mar 2023
  • disclosed22 Feb 2022

Introduced: 22 Feb 2022

CVE-2022-23635  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade RHEL:8 servicemesh-proxy to version 0:2.1.2-4.el8 or higher.
This issue was patched in RHSA-2022:1275.

NVD Description

Note: Versions mentioned in the description apply only to the upstream servicemesh-proxy package and not the servicemesh-proxy package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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 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.

CVSS Scores

version 3.1