The UnescapeURLWithOffsetsImpl function in net/base/escape.cc in Google Chrome before 34.0.1847.116 does not properly handle bidirectional Internationalized Resource Identifiers (IRIs), which makes it easier for remote attackers to spoof URLs via crafted use of right-to-left (RTL) Unicode text.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.