Ubuntu Security Notice 385-1 - Teemu Salmela discovered that tar still handled the deprecated GNUTYPE_NAMES record type. This record type could be used to create symlinks that would be followed while unpacking a tar archive. If a user or an automated system were tricked into unpacking a specially crafted tar file, arbitrary files could be overwritten with user privileges.
fcb3556bbcfb9517e7e5d4212b8cb38c4837e251a5cefd0301edcc4662dd0723