the executor can execute fake cross-chain function call

Lines of code Vulnerability details Impact The caller on relayer side can be rugged if the executor call the executeCall on execution side directly to use consume the nonce and fake cross-chain function call. Proof of Concept The expected behavior is that: the relayer relays a cross-chain request...

Potential reentrancy attack

Lines of code Vulnerability details Impact There is a potential of reentrancy attack in executeCalls in EthereumToArbitrumExecutor.sol since CallLib is making an external call with its executeCalls and we do not know the implementation of the contract that will be called eventually. The same issu...

Malicious relayer can execute stale transactions by spoofing validator weights/threshold in proof

Lines of code Vulnerability details Impact Transaction is submit with wrong validator information, allowing stale commands to be executed Proof of Concept This vulnerability is a result of allowing msg.sender to provide key information identifying operators. First we need to understand how the...

Malicious code in axelar-signing-relayer (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware d1e055dcb45cb56b60eef5249acdc3ed71a7eea55bf8e7e10ca3875941f005b2 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

MAL-2022-1206 Malicious code in axelar-signing-relayer (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware d1e055dcb45cb56b60eef5249acdc3ed71a7eea55bf8e7e10ca3875941f005b2 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

Relayer Will Not Receive Any Fee If execute Reverts

Lines of code Vulnerability details Proof-of-Concept Connext relies on the relayer to trigger the BridgeFacet.execute function on the destination domain to initiate the token transfer and calldata execution processes. Relayers pay for the gas cost to trigger the execute function, and in return fo...

Malicious relayer could exploit sponsor vaults

Lines of code Vulnerability details Impact Sponsor vaults drained Proof of Concept reimburseRelayerFees uses SponsorVault funds to repay users the fees they pay to relayers. A malicious relayer could create a large number of transactions with the max reimbursed relay fee specified in SponsorVault...

Malicious Relayer Could Cause A Router To Provide More Liquidity Than It Should

Lines of code Vulnerability details Proof-of-Concept Assume this is a fast-transfer path and the sequencer has a good reason e.g. some sophisticated liquidity load balancing algorithm to assign 3 routers to provide liquidity for a transfer of 90 DAI Therefore, each of them will provide 30 DAI...

Unhandled reverts from Cosmos to Eth batches can cause *Denial Of Service*

Handle hack3r-0m Vulnerability details At the above-mentioned places in Gravity contract, it makes external call to a function to transfer erc20 token. This can cause revert in cases where erc20 safeTransfer fails for e.g erc20 contract has blacklisted address of gravity contract to alllow...

Large Validator Sets/Rapid Validator Set Updates May Freeze the Bridge or Relayers

Handle nascent Vulnerability details In a similar vein to "Freeze The Bridge Via Large ERC20 Names/Symbols/Denoms", a sufficiently large validator set or sufficiently rapid validator update could cause both the ethoraclemainloop and relayermainloop to fall into a state of perpetual errors. In...

Win all relayer rewards

Handle nascent Vulnerability details "Large Validator Sets/Rapid Validator Set Updates May Freeze the Bridge or Relayer" can affect just the relayers & not affect the oracle in certain circumstances. This could result in valid attestations, but prevent any of the other relayers from being able to...

Signatures use only tx ID instead of entire digest

Handle 0xRajeev Vulnerability details Impact The signature check in recoverFulfillSignature only uses transaction ID along with the relayer fee which can be accidentally reused by the user, in which case the older signatures with the older relayer fees can be replayed. The signature should be on...

The vulnerability of the “ARM Relayer” and “Configurator” software components of the EKRASMS-SP suite of programs, related to the loading of a non-existent dynamic library, allows a violator to execute arbitrary code.

The vulnerability of the “ARM Relay Operator” and “Configurator” software components of the EKRASMS-SP suite lies in the loading of a nonexistent dynamic library. Exploiting this vulnerability allows an attacker to execute arbitrary code using the specially crafted dynamic library...

HTTP Client MS Credential Relayer

This module relays negotiated NTLM Credentials from an HTTP server to multiple protocols. Currently, this module supports relaying to SMB and HTTP. Complicated custom attacks requiring multiple requests that depend on each other can be written using the SYNC options. For example, a CSRF-style...