Is CVE-2021-41135 in the CISA KEV catalog?

No. CVE-2021-41135 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41135?

CVE-2021-41135 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-41135?

CVE-2021-41135 has an EPSS score of 1.66% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41135?

Upgrade cosmos sdk to 0.44.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-41135

MEDIUMEPSS 74th pctl

6.5

CVSS v3

NVD

Description

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.

CWE-754

How to fix

Remediation Available

cosmos sdkNVD

Affected:>= 0.43.0, < 0.44.2Fixed in:0.44.2CVE-2021-41135derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.66%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch1

github.com

Exploit1

forum.cosmos.network

Third-Party Advisory1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.