Authz Module Non-Determinism

中 6.5CVE-2021-41135 · GHSA-2p6r-37p9-89p2 · 20/10/2021 公開 · 17/06/2026 更新

要点

CVE-2021-41135 は github.com/cosmos/cosmos-sdk, cosmos sdk (interchain) に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.7%（全脆弱性の 77.5% より高い）。
対処：0.44.2 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
github.com/cosmos/cosmos-sdk Go	`≥ 0.43.0, < 0.44.2`	`0.44.2`
cosmos sdk interchain	`≥ 0.43.0, < 0.44.2`	`0.44.2`

概要

Impact

Consensus failure for 0.43.x and 0.44.{0,1} users. Funds and balances are safe.

Patches

0.44.2

Workarounds

Manually patch the code.

Full details posted in https://forum.cosmos.network/t/cosmos-sdk-vulnerability-retrospective-security-advisory-jackfruit-october-12-2021/5349.

NVD の説明

The Cosmos-SDK is a framework for building blockchain applications in Golang. Affected versions of the SDK were vulnerable to a consensus halt due to non-deterministic behaviour in a ValidateBasic method in the x/authz module. The MsgGrant of the x/authz module contains a Grant field which includes a user-defined expiration time for when the authorization grant expires. In Grant.ValidateBasic(), that time is compared to the node’s local clock time. Any chain running an affected version of the SDK with the authz module enabled could be halted by anyone with the ability to send transactions on that chain. Recovery would require applying the patch and rolling back the latest block. Users are advised to update to version 0.44.2.