RealPlayer Multiple Vulnerabilities

Multiple vulnerabilities have been identified in RealPlayer, which can be exploited by malicious people to compromise a user's system.

1. An error when unpacking AAC stream data can be exploited to cause a buffer overflow.
2. An error when decoding AAC SDK can be exploited to corrupt heap memory.
3. An error when handling RealMedia files can be exploited to cause a buffer overflow.
4. Another error when handling RealMedia files can be exploited to cause a buffer overflow.

NOTE: Additionally, a weakness exists when parsing codec frame size, which can lead to a crash.