CVE-2024-34360 – Previous ATX is not checked to be the newest valid ATX by Smesher when validating incoming ATX

https://notcve.org/view.php?id=CVE-2024-34360

10 May 2024 — go-spacemesh is a Go implementation of the Spacemesh protocol full node. Nodes can publish activations transactions (ATXs) which reference the incorrect previous ATX of the Smesher that created the ATX. ATXs are expected to form a single chain from the newest to the first ATX ever published by an identity. Allowing Smeshers to reference an earlier (but not the latest) ATX as previous breaks this protocol rule and can serve as an attack vector where Nodes are rewarded for holding their PoST data for less tha... • https://github.com/spacemeshos/api/commit/1d5bd972bbe225d024c3e0ae5214ddb6b481716e • CWE-754: Improper Check for Unusual or Exceptional Conditions •