CVE-2021-41135 describes a consensus halt vulnerability in the Cosmos-SDK, a framework for building blockchain applications, specifically affecting versions with the x/authz module enabled. This flaw stems from non-deterministic behavior in the ValidateBasic method of the x/authz module, where a user-defined expiration time in a MsgGrant is compared against a node's local clock. The vulnerability carries a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity by an authenticated attacker, leading to a high impact on availability by halting the blockchain. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0.43.0, < 0.44.2CPE matchmatch criteria | cpe:2.3:a:interchain:cosmos_sdk:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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