GHSA-82fm-wpc2-5pmp · 深刻度： medium · エコシステム： maven — Apache Storm Prometheus Reporter vulnerable to Improper Certificate Validation via Global SSL Context Downgrade
Improper Certificate Validation via Global SSL Context Downgrade in Apache Storm Prometheus Reporter Versions Affected: from 2.6.3 to 2.8.6 Description: In production deployments where an administrator enables storm.daemon.metrics.reporter.plugin.prometheus.skip_tls_validation (by default it is disabled) intending to affect only the Prometheus reporter, the undocumented global side effect creates an attack surface across every TLS-protected communication channel in the Storm daemon. The PrometheusPreparableReporter class implements an INSECURE_TRUST_MANAGER that accepts all SSL certificates without validation, with empty checkClientTrusted and checkServerTrusted methods. Most critically, when the storm.daemon.metrics.reporter.plugin.prometheus.skip_tls_validation configuration option is enabled (default = disabled) for HTTPS Prometheus PushGateway connections, the INSECURE_CONNECTION_FACTORY calls SSLContext.setDefault(sslContext), which globally replaces the JVM's default SSL context rather than applying the insecure context only to the Prometheus connection. This payload flows through storm.yaml configuration → PrometheusPreparableReporter.prepare() → INSECURE_CONNECTION_FACTORY → SSLContext.setDefault(), resulting in a JVM-wide TLS security downgrade. All subsequent HTTPS connections in the process - including ZooKeeper, Thrift, Netty, and UI connections - silently trust all certificates, including self-signed, expired, and attacker-generated ones, enabling man-in-the-middle interception of cluster state, topology submissions, tuple data, and administrative credentials. Mitigation: 2.x users should upgrade to 2.8.7 if the Prometheus Metrics Reporter is used. Prometheus Metrics Reporter Users who cannot upgrade immediately should remove the storm.daemon.metrics.reporter.plugin.prometheus.skip_tls_validation: true setting from their storm.yaml configuration and instead configure a proper truststore containing the PushGateway's certificate.
総合評価: CVE-2026-40557 は低リスク（22.5/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.19%、9 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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 | 0.10% | 0.19% | +0.09% |
| 2 | 2026-05-06 | 0.01% | 0.10% | +0.09% |
| 3 | 2026-04-28 | — | 0.01% | — |
EPSS の全履歴 （全 3 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 |
|---|---|---|---|---|---|---|
| 4.8 | 3.1 | MEDIUM |
|
2.2 | 2.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-82fm-wpc2-5pmp · 深刻度： medium · エコシステム： maven — Apache Storm Prometheus Reporter vulnerable to Improper Certificate Validation via Global SSL Context Downgrade
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | storm_prometheus_reporter | >= 2.6.3, < 2.8.7 | cpe:2.3:a:apache:storm_prometheus_reporter:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://lists.apache.org/thread/f5bv68z1y5xstz22psjk05p3wn86knjq | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/25/2 | Mailing List Third Party Advisory |