GHSA-p658-8693-mhvg · 深刻度： medium · エコシステム： go — Tendermint Core vulnerable to Uncontrolled Resource Consumption
Tendermint Core is an open source Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines. Tendermint Core v0.34.0 introduced a new way of handling evidence of misbehavior. As part of this, we added a new Timestamp field to Evidence structs. This timestamp would be calculated using the same algorithm that is used when a block is created and proposed. (This algorithm relies on the timestamp of the last commit from this specific block.) In Tendermint Core v0.34.0-v0.34.2, the consensus reactor is responsible for forming DuplicateVoteEvidence whenever double signs are observed. However, the current block is still “in flight” when it is being formed by the consensus reactor. It hasn’t been finalized through network consensus yet. This means that different nodes in the network may observe different “last commits” when assigning a timestamp to DuplicateVoteEvidence. In turn, different nodes could form DuplicateVoteEvidence objects at the same height but with different timestamps. One DuplicateVoteEvidence object (with one timestamp) will then eventually get finalized in the block, but this means that any DuplicateVoteEvidence with a different timestamp is considered invalid. Any node that formed invalid DuplicateVoteEvidence will continue to propose invalid evidence; its peers may see this, and choose to disconnect from this node. This bug means that double signs are DoS vectors in Tendermint Core v0.34.0-v0.34.2. Tendermint Core v0.34.3 is a security release which fixes this bug. As of v0.34.3, DuplicateVoteEvidence is no longer formed by the consensus reactor; rather, the consensus reactor passes the Votes themselves into the EvidencePool, which is now responsible for forming DuplicateVoteEvidence. The EvidencePool has timestamp info that should be consistent across the network, which means that DuplicateVoteEvidence formed in this reactor should have consistent timestamps. This release changes the API between the consensus and evidence reactors.
総合評価: CVE-2021-21271 は中リスク（53.5/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.74%、75 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.37% 上昇。悪用への関心が高まっている可能性があります。 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 | 0.38% | 1.74% | +1.37% |
| 2 | 2026-02-18 | 0.49% | 0.38% | -0.11% |
| 3 | 2025-11-21 | — | 0.49% | — |
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 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 4.0 | 2.0 | MEDIUM |
|
8.0 | 2.9 | [email protected] |
GHSA-p658-8693-mhvg · 深刻度： medium · エコシステム： go — Tendermint Core vulnerable to Uncontrolled Resource Consumption
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| tendermint | tendermint | >= 0.34.0, <= 0.34.2 | cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/tendermint/tendermint/blob/v0.34.3/CHANGELOG.md#v0.34.3 | Release Notes Third Party Advisory |
| https://github.com/tendermint/tendermint/commit/a2a6852ab99e4a0f9e79f0ea8c1726e262e25c76 | Patch Third Party Advisory |
| https://github.com/tendermint/tendermint/security/advisories/GHSA-p658-8693-mhvg | Third Party Advisory |