NSKeyedUnarchiver suffers from an information leak when decoding the SGBigUTF8String class using [SGBigUTF8String initWithCoder:]. This class initializes the string using [SGBigUTF8String initWithUTF8DataNullTerminated:] even though there is no guarantee the bytes provided to the decoder are null terminated. It should use [SGBigUTF8String initWithUTF8Data:] instead.
350595d4b62128692b25160fd0dc54b6e14a6ff528c3e77b5bce0cd7797ace73