Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
okx/exchain
dev @ 5e4c3c5
25
Fixes
0
CVEs
HIGH
Peak severity
40.9%
Coverage
Highlights
Denial of Service: 12 prior fixes. Scrutinize any change in this area.
libs/cosmos-sdk/x/auth/ante: most-fixed (2 issues). Treat as high-risk during review.
19 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Denial of Service: Integer overflow validation bypasses during deserialization length checks can lead to memory exhaustion or out-of-bounds panics, crashing consensus nodes. Comparing sizes consistently as uint64 is required to prevent truncation.
Auth Bypass: Caching transaction signatures based on incorrect or mutable keys allows signature verification bypasses. Corrupting or contaminating the signature cache with mismatched chain IDs allows unauthorized transaction execution.
Denial of Service: A lack of bounds and size limits when allocating memory dynamically for CompactBitArray structures allows remote attackers to trigger out-of-memory panics or integer overflows during validation.