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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200806-09">
<title>libvorbis: Multiple vulnerabilities</title>
Multiple vulnerabilities in libvorbis might lead to the execution of
arbitrary code.
<product type="ebuild">libvorbis</product>
<announced>June 23, 2008</announced>
<revised>June 23, 2008: 02</revised>
<package name="media-libs/libvorbis" auto="yes" arch="*">
<unaffected range="ge">1.2.1_rc1</unaffected>
<vulnerable range="lt">1.2.1_rc1</vulnerable>
libvorbis is the reference implementation of the 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
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
<impact type="normal">
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 &quot;&gt;=media-libs/libvorbis-1.2.1_rc1&quot;</code>
<uri link="">CVE-2008-1419</uri>
<uri link="">CVE-2008-1420</uri>
<uri link="">CVE-2008-1423</uri>
<metadata tag="requester" timestamp="Mon, 16 Jun 2008 22:45:51 +0000">
<metadata tag="submitter" timestamp="Mon, 16 Jun 2008 23:30:07 +0000">
<metadata tag="bugReady" timestamp="Mon, 16 Jun 2008 23:30:17 +0000">