ArkProject: NFT Bridge

Summary

The uint256ArrayDeserialize function deserializes an array of uint256 values from a buffer. However, it does not include bounds checks to ensure that the offset remains within the bounds of the buffer.

Vulnerability Details

In the uint256ArrayDeserialize function, the following snippet may lead to a buffer overflow:

The function assumes that the buffer has enough data to accommodate the deserialization. If the buffer length is less than expected, this can cause out-of-bounds access, potentially leading to unexpected behavior or security issues.

Impact

An attacker could exploit this vulnerability to read or write data beyond the buffer's allocated memory, potentially leading to crashes or other unexpected behavior. This could also be used to manipulate contract state or leak sensitive information.

Tools Used

Manual Code Review

Recommendations

Bounds Checking: Before accessing the buffer, check that the remaining length is sufficient:

Consider using Safe Libraries: Utilize libraries or patterns designed for safe handling of dynamic data structures.