Path Traversal

aws-java-sdk-s3 is vulnerable to path traversal. The vulnerability exists due to the insufficient guard logic used for the download directory in the leavesRoot function of TransferManager.java, allowing an attacker to access files from the S3 bucket that is one level up in the file system by evading the validation logic by adding a UNIX double-dot to the bucket key when the directory name prefix matches the destination directory.