GHSA-72c7-4g63-hpw5 · 深刻度: medium · エコシステム: go — go-witness is Vulnerable to Improper Verification of AWS EC2 Identity Documents
go-witness and witness are Go modules for generating attestations. In go-witness versions 0.8.6 and earlier and witness versions 0.9.2 and earlier the AWS attestor improperly verifies AWS EC2 instance identity documents. Verification can incorrectly succeed when a signature is not present or is empty, and when RSA signature verification fails. The attestor also embeds a single legacy global AWS public certificate and does not account for newer region specific certificates issued in 2024, making detection of forged documents difficult without additional trusted region data. An attacker able to supply or intercept instance identity document data (such as through Instance Metadata Service impersonation) can cause a forged identity document to be accepted, leading to incorrect trust decisions based on the attestation. This is fixed in go-witness 0.9.1 and witness 0.10.1. As a workaround, manually verify the included identity document, signature, and public key with standard tools (for example openssl) following AWS’s verification guidance, or disable use of the AWS attestor until upgraded.
総合評価: CVE-2025-62375 は低リスク(30.7/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.19%、8 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 | 0.02% | 0.19% | +0.16% |
| 2 | 2025-10-16 | — | 0.02% | — |
EPSS の全履歴 (全 2 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 |
|---|---|---|---|---|---|---|
| 6.9 | 4.0 | MEDIUM |
|
— | — | [email protected] |
GHSA-72c7-4g63-hpw5 · 深刻度: medium · エコシステム: go — go-witness is Vulnerable to Improper Verification of AWS EC2 Identity Documents
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-62375 unimportant priority: Debian including 1 source packages (golang-github-in-toto-go-witness), 2 status rows across 2 suites (forky, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2025-62375 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-62375 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| データセットに影響を受ける製品はありません。 | |||