libvorbis: Multiple vulnerabilities

libvorbis: Multiple vulnerabilities Multiple vulnerabilities in libvorbis might lead to the execution of arbitrary code. libvorbis June 23, 2008 June 23, 2008: 02 222085 remote 1.2.1_rc1 1.2.1_rc1

libvorbis is the reference implementation of the Xiph.org Ogg Vorbis audio file format. It is used by many applications for playback of Ogg Vorbis files.

Will Drewry of the Google Security Team reported multiple vulnerabilities in libvorbis:

A zero value for "codebook.dim" is not properly handled, leading to a crash, infinite loop or triggering an integer overflow (CVE-2008-1419).
An integer overflow in "residue partition value" evaluation might lead to a heap-based buffer overflow (CVE-2008-1420).
An integer overflow in a certain "quantvals" and "quantlist" calculation might lead to a heap-based buffer overflow (CVE-2008-1423).

A remote attacker could exploit these vulnerabilities by enticing a user to open a specially crafted Ogg Vorbis file or network stream with an application using libvorbis. This might lead to the execution of arbitrary code with the privileges of the user playing the file or a Denial of Service by a crash or CPU consumption.

There is no known workaround at this time.

All libvorbis users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libvorbis-1.2.1_rc1"

CVE-2008-1419 CVE-2008-1420 CVE-2008-1423 rbu rbu rbu