Vulnerability Details : CVE-2022-39278
Istio is an open platform-independent service mesh that provides traffic management, policy enforcement, and telemetry collection. Prior to versions 1.15.2, 1.14.5, and 1.13.9, the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted or oversized message which results in the control plane crashing when the Kubernetes validating or mutating webhook service 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 topologies, this port is exposed over the public internet. Versions 1.15.2, 1.14.5, and 1.13.9 contain patches for this issue. There are no effective workarounds, beyond upgrading. This bug is due to an error in `regexp.Compile` in Go.
Exploit prediction scoring system (EPSS) score for CVE-2022-39278
Probability of exploitation activity in the next 30 days: 0.12%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 46 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2022-39278
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2022-39278
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The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-39278
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https://istio.io/news/releases/1.14.x/announcing-1.14.5/
Istio / Announcing Istio 1.14.5Third Party Advisory
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https://github.com/istio/istio/security/advisories/GHSA-86vr-4wcv-mm9w
Denial of service attack due to Golang Regex Library · Advisory · istio/istio · GitHubThird Party Advisory
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https://istio.io/latest/news/releases/1.13.x/announcing-1.13.9/
Istio / Announcing Istio 1.13.9Third Party Advisory
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https://istio.io/latest/news/releases/1.15.x/announcing-1.15.2/
Istio / Announcing Istio 1.15.2Third Party Advisory
Products affected by CVE-2022-39278
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*