GHSA-7225-m954-23v7: ASA-2024-010: cosmossdk.io/math: Mismatched bit-length validation in sdk.Int and sdk.Dec can lead to panic

Name: ASA-2024-010: Mismatched bit-length in sdk.Int and sdk.Dec can lead to panic
Component: Cosmos SDK / Math
Criticality: High (Considerable Impact, and Possible Likelihood per ACMv1.2)
Affected versions: cosmossdk.io/math package versions <= math/v1.3.0
Affected users: Chain Builders + Maintainers, Validators

Impact

The bit-length in sdk.Int and sdk.Dec are not aligned, which may present a possible panic condition when interacting with Dec types in an Int context. This issue was resolved by aligning the max size between the data types in the cosmossdk.io/math package.

This issue impacts consumers of the cosmossdk.io/math, which includes popular modules including IBC-Go and tokenfactory (permissionless). If your chain interacts with APIs in the cosmossdk.io/math package, or utilizes a module that consumes this library, it is advised to update to the latest version at the time of the patch release by updating your project’s go.mod dependency for cosmossdk.io/math.

The patch can be applied without a hard-fork, and with a version bump in a chain’s go.mod file like the following:

go.mod

- cosmossdk.io/math v1.3.0

• cosmossdk.io/math v1.4.0

Note

When on a lower version than cosmossdk.io/math v1.3.0, please do a coordinated upgrade before upgrading to >= 1.3.0

Patches

The new release of cosmossdk.io/math v1.4.0 resolves this issue. Chains that utilize the cosmossdk.io/math library or modules that utilize the cosmossdk.io/math library should update to avoid this condition.

Timeline

• October 31, 2024, 6:55pm UTC: Issue reported to the Cosmos Bug Bounty program
• October 31, 2024, 8:56pm UTC: Issue triaged by Amulet on-call, and distributed to Core team
• Nov 15, 2024, 2:12am PST: Core team completes patch for issue
• Nov 19, 2024, 8:00am PST / 16:00 GMT: Pre-notification delivered
• Nov 20, 2024, 8:00am PST / 16:00 GMT: Patch made available

This issue was reported by LonelySloth to the Cosmos Bug Bounty Program on HackerOne on October 31, 2024. If you believe you have found a bug in the Interchain Stack or would like to contribute to the program by reporting a bug, please see https://hackerone.com/cosmos.

If you have questions about Interchain security efforts, please reach out to our official communication channel at [email protected]. For more information about the Interchain Foundation’s engagement with Amulet, and to sign up for security notification emails, please see https://github.com/interchainio/security.

References

• GHSA-7225-m954-23v7
• cosmos/cosmos-sdk@c6522a7