The remote host is missing an update to gst-plugins-base0.10 announced via advisory USN-735-1.
Details follow:
It was discovered that the Base64 decoding functions in GStreamer Base Plugins did not properly handle large images in Vorbis file tags. If a user were tricked into opening a specially crafted Vorbis file, an attacker could possibly execute arbitrary code with user privileges.
Solution: The problem can be corrected by upgrading your system to the following package versions: