F-2025-0016·denial-of-service
Oversized packet in ORDERED IBC channel can cause channel closure
TL;DR
Oversized payloads sent over ORDERED IBC channels could cause channel closure on the receiving chain, requiring channel re-establishment and potentially blocking transfers.
Severity
LOW
Impact
MEDIUM
Likelihood
LOW
Method
MManual review
CAT.
Complexity
MEDIUM
Exploitability
LOW
02Section · Description
Description
The integration did not enforce a maximum packet size before submission to ORDERED IBC channels. An oversized packet could be rejected on the destination chain, and on ORDERED channels a rejection causes channel closure, blocking subsequent traffic until the channel is re-established.
03Section · Recommendation
Recommendation
Validate packet size against the destination chain's limit before submission. If the payload exceeds the limit, reject the operation client-side rather than risking channel closure.
Initia: Resolved. Pashov Audit Group: Resolved.
Status
Fixed
Fix commit
de9d3602dc1a
Fix date
2025-06-23