Impact

Chains using affected versions of Packet Forward Middleware in their IBC Transfer stack are vulnerable to an attack in which there is a potential denial of service. This affects IBC transfers for any asset which is being transferred between another chain and its native chain.

We recommend upgrading as soon as possible.

THIS IS A STATE BREAKING CHANGE

Patches

Versions 7.2.1 and 8.1.1 are patched.

Workarounds

N/A

References

N/A