This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Computer Associates BrightStor ARCserve Backup, Enterprise Backup, Server Protection Suite and Business Protection Suite. Authentication is not required to exploit this vulnerability.
The problem specifically exists within ASCORE.dll, a DLL used by the Message Engine RPC server. This service exposes a heap overflow vulnerability through RPC opcode 43 (0x2b) and a stack overflow vulnerability through RPC opcode 45 (0x2d) on TCP port 6503 endpoint with ID dc246bf0-7a7a-11ce-9f88-00805fe43838. The flaws are exposed when passing long strings as the second parameter to either opcode.