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| return ret; | ||
| } | ||
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| private long ParseHexToLong(byte[] data) |
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🤖 Security Issue: ParseHexToLong() performs manual hex-to-long conversion without overflow checking when processing cross-chain messages, allowing integer wraparound
Severity: HIGH
Category: integer_overflow
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: Attacker submits ForwardMessage with crafted byte data that causes ParseHexToLong to overflow, manipulating receiptIndex values to forge receipt IDs and potentially release tokens multiple times
Recommendation: Replace manual parsing with safe built-in parsing using long.TryParse() or BigInteger with explicit bounds checking
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| return decimalValue; | ||
| } | ||
| private string ParseHexToString(byte[] data) |
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🤖 Security Issue: ParseHexToString() has similar overflow issue when parsing amount values in cross-chain transfers
Severity: HIGH
Category: integer_overflow
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: Crafted message data can cause amount values to wrap around or be misrepresented, potentially allowing attackers to mint more tokens than intended
Recommendation: Use safe parsing with overflow protection and validate parsed amounts are within expected ranges
| return new Empty(); | ||
| } | ||
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| public override Empty Migrator(MigratorInput input) |
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🤖 Security Issue: Migrator() function trusts input.Provider address without verification beyond checking sender is BridgeContract
Severity: HIGH
Category: authorization_bypass
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: If BridgeContract is compromised or has a vulnerability, attacker can call Migrator() with arbitrary Provider address to manipulate liquidity balances and withdraw funds
Recommendation: Add validation that Provider address is a legitimate liquidity provider and implement additional authorization checks
| Assert(leafHashValue == computeHash, "Invalid leaf hash."); | ||
| Assert(State.ReceiptHashRecordStatus[leafHashValue] == false, "Leaf hash has been recorded."); | ||
| amount = ParseHexToString(amountByte); | ||
| targetAddress = Address.FromBytes(targetAddressByte); |
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🤖 Security Issue: Address.FromBytes() called on untrusted message data without validation in EncodeMessageAndVerification()
Severity: HIGH
Category: unsafe_deserialization
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: Malformed address bytes in cross-chain message could cause Address.FromBytes to return invalid address or bypass validation, sending tokens to unintended destinations
Recommendation: Validate address bytes format before conversion and verify resulting address is valid
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| public partial class TokenPoolContract : TokenPoolContractContainer.TokenPoolContractBase | ||
| { | ||
| public override Empty Initialize(InitializeInput input) |
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🤖 Security Issue: Initialize() function lacks sender authorization check, allowing any caller to become admin if contract not yet initialized
Severity: HIGH
Category: authorization_bypass
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: During deployment race condition, attacker could call Initialize() before legitimate admin, gaining control of the TokenPool contract
Recommendation: Add authorization check that only Genesis contract or predetermined address can initialize
| var amountByte = messageByte.Skip(64).Take(32).ToArray(); | ||
| var targetAddressByte = messageByte.Skip(96).Take(32).ToArray(); | ||
| var leafHash = messageByte.Skip(128).Take(32).ToArray(); | ||
| var leafHashValue = Hash.LoadFromHex(leafHash.ToHex()); |
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🤖 Security Issue: Receipt hash verification relies on parsed receiptIndex from untrusted message data, potentially allowing hash collision attacks
Severity: MEDIUM
Category: hash_collision
Tool: ClaudeCode AI Security Analysis
Exploit Scenario: Attacker crafts message with modified receiptIndex that produces same hash, potentially replaying token releases
Recommendation: Include additional unique identifiers in hash computation and validate receiptIndex range
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