Referenced CVEs:

================================================== ========= Ubuntu Security Notice USN-540-1 November 13, 2007 flac vulnerability CVE-2007-4619 ================================================== ========= A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 6.10 Ubuntu 7.04 Ubuntu 7.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libflac7 1.1.2-3ubuntu1.1 Ubuntu 6.10: libflac7 1.1.2-5ubuntu1.1 Ubuntu 7.04: libflac7 1.1.2-5ubuntu2.1 Ubuntu 7.10: libflac8 1.1.4-3ubuntu1.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Sean de Regge discovered that flac did not properly perform bounds checking in many situations. An attacker could send a specially crafted FLAC audio file and execute arbitrary code as the user or cause a denial of service in flac or applications that link against flac.