fix blob slot validation

beacon_node/beacon_chain/src/blob_verification.rs

@@ -19,15 +19,15 @@ pub enum BlobError {
         message_slot: Slot,
         latest_permissible_slot: Slot,
     },
-    /// The blob sidecar is from a slot that is prior to the earliest permissible slot (with
-    /// respect to the gossip clock disparity).
+
+    /// The blob sidecar has a different slot than the block.
     ///
     /// ## Peer scoring
     ///
     /// Assuming the local clock is correct, the peer has sent an invalid message.
-    PastSlot {
-        message_slot: Slot,
-        earliest_permissible_slot: Slot,
+    SlotMismatch {
+        blob_slot: Slot,
+        block_slot: Slot,
     },
 
     /// The blob sidecar contains an incorrectly formatted `BLSFieldElement` > `BLS_MODULUS`.
@@ -122,14 +122,10 @@ pub fn validate_blob_for_gossip<T: BeaconChainTypes>(
         });
     }
 
-    let earliest_permissible_slot = chain
-        .slot_clock
-        .now_with_past_tolerance(MAXIMUM_GOSSIP_CLOCK_DISPARITY)
-        .ok_or(BeaconChainError::UnableToReadSlot)?;
-    if blob_slot > earliest_permissible_slot {
-        return Err(BlobError::PastSlot {
-            message_slot: earliest_permissible_slot,
-            earliest_permissible_slot: blob_slot,
+    if blob_slot != block_slot {
+        return Err(BlobError::SlotMismatch {
+            blob_slot,
+            block_slot,
         });
     }
 

beacon_node/network/src/beacon_processor/worker/gossip_methods.rs

@@ -840,7 +840,17 @@ impl<T: BeaconChainTypes> Worker<T> {
                 );
                 return None;
             }
-            Err(blob_errors) => unimplemented!("handle")
+            Err(e@ BlockError::BlobValidation(_)) => {
+                warn!(self.log, "Could not verify blob for gossip. Rejecting the block and blob";
+                            "error" => %e);
+                self.propagate_validation_result(message_id, peer_id, MessageAcceptance::Reject);
+                self.gossip_penalize_peer(
+                    peer_id,
+                    PeerAction::LowToleranceError,
+                    "gossip_blob_low",
+                );
+                return None;
+            }
         };
 
         metrics::inc_counter(&metrics::BEACON_PROCESSOR_GOSSIP_BLOCK_VERIFIED_TOTAL);

scripts/local_testnet/genesis.json

@@ -12,8 +12,8 @@
     "berlinBlock": 0,
     "londonBlock": 0,
     "mergeNetsplitBlock": 0,
-    "shanghaiTime": 1670428733,
-    "shardingForkTime": 1670428829,
+    "shanghaiTime": 1670438240,
+    "shardingForkTime": 1670438336,
     "terminalTotalDifficulty": 0
   },
   "alloc": {