CVE-2022-24726

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Summary

CVECVE-2022-24726
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-03-10 21:15:00 UTC
Updated2022-03-18 20:20:00 UTC
DescriptionIstio 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 when the validating webhook for a cluster is exposed publicly. This endpoint is served over TLS port 15017, 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 [external istiod](https://istio.io/latest/docs/setup/install/external-controlplane/) topologies, this port is exposed over the public internet. This issue has been patched in versions 1.13.2, 1.12.5 and 1.11.8. Users are advised to upgrade. Users unable to upgrade should disable access to a validating webhook that is exposed to the public internet or restrict the set of IP addresses that can query it to a set of known, trusted entities.

Risk And Classification

Problem Types: CWE-400

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Istio Istio All All All All

References

ReferenceSourceLinkTags
[release-1.13] pilot: limit reads from untrusted inputs (#37792) · istio/istio@6ca5055 · GitHub MISC github.com
Unauthenticated control plane denial of service attack due to stack exhaustion · Advisory · istio/istio · GitHub CONFIRM github.com
regexp: stack overflow (process exit) handling deeply nested regexp · Issue #51112 · golang/go · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159783 Oracle Enterprise Linux Security Update for olcne istio istio (ELSA-2022-9362)
  • 159784 Oracle Enterprise Linux Security Update for olcne istio istio (ELSA-2022-9363)
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