nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation

Impact SkipBlockProof::verify computes its quorum check using BitSet.len, then iterates BitSet indices and casts each usize index to u16 slot as u16 for slot lookup. If an attacker can get a SkipBlockProof verified where MultiSignature.signers contains out-of-range indices spaced by 65536, these...

CVE-2023-35163

Vega is a decentralized trading platform that allows pseudo-anonymous trading of derivatives on a blockchain. Prior to version 0.71.6, a vulnerability exists that allows a malicious validator to trick the Vega network into re-processing past Ethereum events from Vega’s Ethereum bridge. For exampl...

CVE-2023-35163 Vega's validators able to submit duplicate transactions

Vega is a decentralized trading platform that allows pseudo-anonymous trading of derivatives on a blockchain. Prior to version 0.71.6, a vulnerability exists that allows a malicious validator to trick the Vega network into re-processing past Ethereum events from Vega’s Ethereum bridge. For exampl...

GHSA-8RC9-VXJH-QJF2 Vega's validators able to submit duplicate transactions

A vulnerability exists that allows a malicious validator to trick the Vega network into re-processing past Ethereum events from Vega’s Ethereum bridge. For example, a deposit to the collateral bridge for 100USDT that credits a party’s general account on Vega, can be re-processed 50 times resultin...

EVENT EMITTED WITHOUT ACTION

Lines of code Vulnerability details Impact A malicious validator can remain in the system after exceeding it's exit penalty threshold. This poses a risk to users and a possible reputation risk to the protocol. Proof of Concept In the updateTotalPenaltyAmount... function, when the validators...

A Malicious validator can frontrun 32ETH deposit

Lines of code Vulnerability details Impact Frontrunning by malicious validator actor to change the withdrawal credentials and gain the withdrawal ETH value. Proof of Concept A malicious validator can frontrun stake transaction with the same pubkey and deposit 1 ether for different withdrawal...

Frontrunning by malicious validator

Lines of code Vulnerability details Impact Frontrunning by malicious validator changing withdrawal credentials Proof of Concept A malicious validator can frontrun depositEther transaction for its pubKey and deposit 1 ether for different withdrawal credential, thereby setting withdrawal credit...