| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200806-09:02 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: libvorbis: Multiple vulnerabilities |
| 9 |
Date: June 23, 2008 |
| 10 |
Updated: June 23, 2008 |
| 11 |
Bugs: #222085 |
| 12 |
ID: 200806-09:02 |
| 13 |
|
| 14 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 15 |
|
| 16 |
Synopsis |
| 17 |
======== |
| 18 |
|
| 19 |
Multiple vulnerabilities in libvorbis might lead to the execution of |
| 20 |
arbitrary code. |
| 21 |
|
| 22 |
Background |
| 23 |
========== |
| 24 |
|
| 25 |
libvorbis is the reference implementation of the Xiph.org Ogg Vorbis |
| 26 |
audio file format. It is used by many applications for playback of Ogg |
| 27 |
Vorbis files. |
| 28 |
|
| 29 |
Affected packages |
| 30 |
================= |
| 31 |
|
| 32 |
------------------------------------------------------------------- |
| 33 |
Package / Vulnerable / Unaffected |
| 34 |
------------------------------------------------------------------- |
| 35 |
1 media-libs/libvorbis < 1.2.1_rc1 >= 1.2.1_rc1 |
| 36 |
|
| 37 |
Description |
| 38 |
=========== |
| 39 |
|
| 40 |
Will Drewry of the Google Security Team reported multiple |
| 41 |
vulnerabilities in libvorbis: |
| 42 |
|
| 43 |
* A zero value for "codebook.dim" is not properly handled, leading to |
| 44 |
a crash, infinite loop or triggering an integer overflow |
| 45 |
(CVE-2008-1419). |
| 46 |
|
| 47 |
* An integer overflow in "residue partition value" evaluation might |
| 48 |
lead to a heap-based buffer overflow (CVE-2008-1420). |
| 49 |
|
| 50 |
* An integer overflow in a certain "quantvals" and "quantlist" |
| 51 |
calculation might lead to a heap-based buffer overflow |
| 52 |
(CVE-2008-1423). |
| 53 |
|
| 54 |
Impact |
| 55 |
====== |
| 56 |
|
| 57 |
A remote attacker could exploit these vulnerabilities by enticing a |
| 58 |
user to open a specially crafted Ogg Vorbis file or network stream with |
| 59 |
an application using libvorbis. This might lead to the execution of |
| 60 |
arbitrary code with the privileges of the user playing the file or a |
| 61 |
Denial of Service by a crash or CPU consumption. |
| 62 |
|
| 63 |
Workaround |
| 64 |
========== |
| 65 |
|
| 66 |
There is no known workaround at this time. |
| 67 |
|
| 68 |
Resolution |
| 69 |
========== |
| 70 |
|
| 71 |
All libvorbis users should upgrade to the latest version: |
| 72 |
|
| 73 |
# emerge --sync |
| 74 |
# emerge --ask --oneshot -v ">=media-libs/libvorbis-1.2.1_rc1" |
| 75 |
|
| 76 |
References |
| 77 |
========== |
| 78 |
|
| 79 |
[ 1 ] CVE-2008-1419 |
| 80 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1419 |
| 81 |
[ 2 ] CVE-2008-1420 |
| 82 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1420 |
| 83 |
[ 3 ] CVE-2008-1423 |
| 84 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1423 |
| 85 |
|
| 86 |
Availability |
| 87 |
============ |
| 88 |
|
| 89 |
This GLSA and any updates to it are available for viewing at |
| 90 |
the Gentoo Security Website: |
| 91 |
|
| 92 |
http://security.gentoo.org/glsa/glsa-200806-09.xml |
| 93 |
|
| 94 |
Concerns? |
| 95 |
========= |
| 96 |
|
| 97 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 98 |
confidentiality and security of our users machines is of utmost |
| 99 |
importance to us. Any security concerns should be addressed to |
| 100 |
security@g.o or alternatively, you may file a bug at |
| 101 |
http://bugs.gentoo.org. |
| 102 |
|
| 103 |
License |
| 104 |
======= |
| 105 |
|
| 106 |
Copyright 2008 Gentoo Foundation, Inc; referenced text |
| 107 |
belongs to its owner(s). |
| 108 |
|
| 109 |
The contents of this document are licensed under the |
| 110 |
Creative Commons - Attribution / Share Alike license. |
| 111 |
|
| 112 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives