GHSA-cq38-jh5f-37mq · 深刻度: low · エコシステム: go — sigstore-go has an unbounded loop over untrusted input can lead to endless data attack
sigstore-go, a Go library for Sigstore signing and verification, is susceptible to a denial of service attack in versions prior to 0.6.1 when a verifier is provided a maliciously crafted Sigstore Bundle containing large amounts of verifiable data, in the form of signed transparency log entries, RFC 3161 timestamps, and attestation subjects. The verification of these data structures is computationally expensive. This can be used to consume excessive CPU resources, leading to a denial of service attack. TUF's security model labels this type of vulnerability an "Endless data attack," and can lead to verification failing to complete and disrupting services that rely on sigstore-go for verification. This vulnerability is addressed with sigstore-go 0.6.1, which adds hard limits to the number of verifiable data structures that can be processed in a bundle. Verification will fail if a bundle has data that exceeds these limits. The limits are 32 signed transparency log entries, 32 RFC 3161 timestamps, 1024 attestation subjects, and 32 digests per attestation subject. These limits are intended to be high enough to accommodate the vast majority of use cases, while preventing the verification of maliciously crafted bundles that contain large amounts of verifiable data. Users who are vulnerable but unable to quickly upgrade may consider adding manual bundle validation to enforce limits similar to those in the referenced patch prior to calling sigstore-go's verification functions.
総合評価: CVE-2024-45395 は低リスク(24.8/100)。CVSS 深刻度は低。悪用される可能性が高い(EPSS 0.44%、35 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 | 0.22% | 0.44% | +0.22% |
| 2 | 2025-11-21 | 0.61% | 0.22% | -0.39% |
| 3 | 2025-11-18 | — | 0.61% | — |
EPSS の全履歴 (全 12 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 |
|---|---|---|---|---|---|---|
| 3.1 | 3.1 | LOW |
|
1.6 | 1.4 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-cq38-jh5f-37mq · 深刻度: low · エコシステム: go — sigstore-go has an unbounded loop over untrusted input can lead to endless data attack
| vendor | priority | summary | link |
|---|---|---|---|
suse
|
low | — | https://www.suse.com/security/cve/CVE-2024-45395/ |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| sigstore | sigstore-go | < 0.6.1 | cpe:2.3:a:sigstore:sigstore-go:*:*:*:*:*:*:*:* |