GHSA-856q-xv3c-7f2f · 深刻度: high · エコシステム: go — Unauthenticated control plane denial of service attack in Istio
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.
総合評価: CVE-2022-23635 は中リスク(56/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 1.56%、72 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.68% | 1.56% | +0.87% |
| 2 | 2025-11-21 | 0.47% | 0.68% | +0.21% |
| 3 | 2025-11-18 | — | 0.47% | — |
EPSS の全履歴 (全 13 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-856q-xv3c-7f2f · 深刻度: high · エコシステム: go — Unauthenticated control plane denial of service attack in Istio
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-23635 |
| URL | タグ |
|---|---|
| https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84 | Patch Third Party Advisory |
| https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f | Issue Tracking Third Party Advisory |
| https://istio.io/latest/news/security/istio-security-2022-003 | Third Party Advisory |