The remote host is missing an update to libsndfile announced via advisory USN-749-1.
Details follow:
It was discovered that libsndfile did not correctly handle description chunks in CAF audio files. If a user or automated system were tricked into opening a specially crafted CAF audio file, an attacker could execute arbitrary code with the privileges of the user invoking the program.
Solution: The problem can be corrected by upgrading your system to the following package versions: