Vulnerability in Cosmos Cosmos-Sdk
CVE-2021-41135
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Cosmos Cosmos-Sdk — versions >= 0.43.0, < 0.44.2
- Interchain Cosmos Sdk
Weakness classification (CWE)
References
- github.com/cosmos/cosmos-sdk/security/advisories/GHSA-2p6r-37p9-89p2 (Third Party Advisory)
- github.com/cosmos/cosmos-sdk/commit/68ab790a761e80d3674f821794cf18ccbfed45ee (Patch, Third Party Advisory)
- forum.cosmos.network/t/cosmos-sdk-vulnerability-retrospective-security-advisory… (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-41135?
- CVE-2021-41135 is a medium-severity vulnerability in Cosmos Cosmos-Sdk, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.5/10. Published 2021-10-20.
- How severe is CVE-2021-41135?
- Medium severity. CVSS v3 base score is 6.5 out of 10.